1. [Norcen05b] R. Norcen, A. Uhl, "Performance Analysis of Block-Based Permutations in Securing JPEG2000 and SPIHT Compression", In S. Li, F. Pereira, H.-Y. Shum, A. G. Tescher, editors, Visual Communications and Image Processing 2005 (VCIP'05), pp. 944-952, Beijing, China, SPIE Proceedings, 5960, SPIE, July 13-15, 2005
2. [Norcen03b] Roland Norcen, Andreas Uhl, "Performance issues in MPEG-4 VTC image coding", In T. Ebrahimi, T. Sikora, editors, Visual Communications and Image Processing 2003 (VCIP'03), pp. 880-890, Lugano, Switzerland, SPIE Proceedings, 5150, SPIE, July 8-11, 2003
3. [Norcen03a] Roland Norcen, Andreas Uhl, "Experiments in JPEG2000-based Intra coding for H.26L", In T. Ebrahimi, T. Sikora, editors, Visual Communications and Image Processing 2003 (VCIP'03), pp. 745-751, Lugano, Switzerland, SPIE Proceedings, 5150, SPIE, July 8-11, 2003
4. [Engel03a] Dominik Engel, Andreas Uhl, "Adaptive image compression of arbitrarily shaped objects using wavelet packets", In Picture Coding Symposium 2003 (PCS'03), pp. 283-288, Saint Malo, France, April 2003
5. [Norcen03c] Roland Norcen, Andreas Uhl, "Performance and Quality Issues in Matching Pursuit Residue Coding", In Picture Coding Symposium 2003 (PCS'03), pp. 433-438, Saint Malo, France, April 2003
6. [Norcen01b] R. Norcen, A. Uhl, "Granularity and Programming Paradigms in Parallel MPP Image Coding", In G.R. Jourbert, A. Murli, F. Peters, M. Vanneschi, editors, Parallel Computing: Fundamentals and Applications. Proceedings of the International Conference ParCo 2001 , pp. 330-337, Imperial College Press, 2002
7. [Kutil01b] R. Kutil, "Approximating Basic Image Operations in the Wavelet Domain", In , editor, Proceedings of the European Conference on Computer Vision 2002 (ECCV), , Springer-Verlag, May 2002
8. [Meerwald02a] Peter Meerwald, Roland Norcen, Andreas Uhl, "Cache Issues with JPEG2000 Wavelet Lifting", In C.-C. Jay Kuo, editor, Visual Communications and Image Processing 2002 (VCIP'02), pp. 626-634, San Jose, CA, USA, SPIE Proceedings, 4671, SPIE, January 19 - 25, 2001
9. [Meerwald02b] Peter Meerwald, Shelby Pereira, "Attacks, applications and evaluation of known watermarking algorithms with Checkmark", In Ping Wah Wong, Edward J. Delp, editors, Proceedings of SPIE, Electronic Imaging, Security and Watermarking of Multimedia Contents IV, San Jose, CA, USA, 4675, SPIE, January 21 - 24, 2001
10. [Kutil00a] R. Kutil, A. Uhl, "Parallel Adaptive Wavelet Analysis (Invited Paper)", Future Generation Computer Systems (Special Issue on High Performance Numerical Methods and Applications) 1:18, pp. 97-106, 2001
11. [Feil99e] M. Feil, A. Uhl, "Real-time Image Analysis using MIMD Parallel ``\`a trous'' Wavelet Algorithms", Real-time Imaging 7:6, pp. 483-493, 2001
12. [Reisecker01a] M. Reisecker, "The JPEG2000 Standard and its implementation in the Verification Model 6.0", Master thesis, University of Salzburg, Austria
13. [Meerwald01c] P. Meerwald, A. Uhl, "Watermark security via wavelet filter parametrization", In Proceedings of the IEEE International Conference on Image Processing (ICIP'01), pp. 1027-1030, Thessaloniki, Greece, 3, IEEE Signal Processing Society, October 7-10, 2001
14. [Meerwald01d] Peter Meerwald, "Quantization watermarking in the JPEG2000 coding pipeline", In Ralf Steinmetz, Jana Dittmann, Martin Steinebach, editors, Communications and Multimedia Security Issues of The New Century, IFIP TC6/TC11 Fifth Joint Working Conference on Communications and Multimedia Security, CMS '01, pp. 69-79, Darmstadt, Germany, Kluver Academic Publishing, May 21 - 22, 2001
15. [Kraemer01a] D. Krämer, "Hyperbolic filtering from theory to image compression", Master thesis, Dept. of Scientific Computing, Salzburg University, Austria
16. [Flatscher01b] H. Flatscher, "Adaptive and object-based image and video compression using wavelets", Master thesis, Dept. of Scientific Computing, Salzburg University, Austria
17. [Reichl01a] M. Reichl, "Fractal quantizers for the wavelet transform domain", Master thesis, Dept. of Scientific Computing, Salzburg University, Austria
18. [Meerwald01a] P. Meerwald, A. Uhl, "A Survey of Wavelet-domain Watermarking Algorithms", In Ping Wah Wong, Edward J. Delp, editors, Proceedings of SPIE, Electronic Imaging, Security and Watermarking of Multimedia Contents III, San Jose, CA, USA, 4314, SPIE, January 22 - 26, 2001
19. [Norcen01a] R. Norcen, "Parallel implementations of matching pursuit projection", Master thesis, Dept. of Scientific Computing, Salzburg University, Austria
20. [Meerwald01b] Peter Meerwald, "Digital Image Watermarking in the Wavelet Transform Domain", Master thesis, Department of Scientific Computing, University of Salzburg, Austria
21. [Kutil01a] R. Kutil, "Zerotree Based Video Coding on MIMD Architectures", In S. Panchanathan, V. Bove, S.I. Sudharsanan, editors, Media Processors 2001, pp. 61-68, SPIE Proceedings, 4313, Jan. 2001
22. [Feil01a] M. Feil, A. Uhl, "Wavelet Packet Based Video Coding in Parallel and Distributed Environments", In S. Panchanathan, V. Bove, S.I. Sudharsanan, editors, Media Processors 2001, pp. 52-60, SPIE Proceedings, 4313, Jan. 2001
23. [Hufnagl99b] C. Hufnagl, A. Uhl, "Algorithms for Fractal Image Compression on Massively Parallel SIMD Arrays", Real-time Imaging 6:4, pp. 267-281, 2000
24. [Kutil99d] R. Kutil, A. Uhl, "Parallel Adaptive 3-D Wavelet Analysis for Fast and Efficient Video Coding", In E.H. D'Hollander, G.R. Joubert, F.J. Peters, H.J. Sips, editors, Parallel Computing: Fundamentals and Applications. Proceedings of the International Conference ParCo 1999, pp. 316-323, Imperial College Press, 2000
25. [Kutil99b] R. Kutil, A. Uhl, "Optimization of 3-D Wavelet Decomposition on Multiprocessors", Journal of Computing and Information Technology (Special Issue on Parallel Numerics and Parallel Computing in Image Processing, Video Processing, and Multimedia) 8:1, pp. 31-40, 2000
26. [Hufnagl00a] C. Hufnagl, A. Uhl, "Fractal Block-Matching in Motion Compensated Video Coding", Fractals 8:1, pp. 35-48, 2000
27. [Feil00b] M. Feil, A. Uhl, "Multicomputer Algorithms for Wavelet Packet Image Decomposition", In Proceedings of the International Parallel and Distributed Processing Symposium (IPDPS'2000), pp. 793-798, Cancun, Mexico, IEEE Computer Society, 2000
28. [Feil00a] M. Feil, A. Uhl, "2-D Wavelet Packet Decomposition on Multicomputers", In Proceedings of the 8th Euromicro Workshop on Parallel and Distributed Processing, pp. 351-356, IEEE Computer Society, 2000
29. [Bruckmann00a] A. Bruckmann, A. Uhl, "Selective Medical Image Compression Techniques for Telemedical and Archiving Applications", Computers in Biology and Medicine 30:3, pp. 153-169, 2000
30. [Pommer00a] A. Pommer, A. Uhl, "Multimedia Soft Encryption Using NSMRA Wavelet Packet Methods: Parallel Attacks", In G. Ok\vsa, R. Trobec, A. Uhl, M. Vajter\vsic, R. Wyrzykowski, P. Zinterhof, editors, Proceedings of the International Workshop on Parallel Numerics (Parnum 2000), pp. 179-190, Bratislava, Slovakia, Sep. 2000
31. [Schuerer00a] R. Schürer, "Adaptive Numerical Integration on Message-Passing Systems", In G. Ok\vsa, R. Trobec, A. Uhl, M. Vajter\vsic, R. Wyrzykowski, P. Zinterhof, editors, Proceedings of the International Workshop on Parallel Numerics (Parnum 2000), pp. 93-102, Bratislava, Slovakia, Sep. 2000
32. [Meerwald00a] Peter Meerwald, Andreas Uhl, "Sicherheit und Robustheit Wavelet-basierter Watermarking-Algorithmen", In M. Schumacher, R. Steinmetz, editors, Proceedings des Workshops Sicherheit in Netzen und Medienströmen, pp. 181-190, Berlin, Germany, Informatik aktuell, Springer-Verlag, Sep. 2000
33. [Norcen00a] R. Norcen, P. Schneider, A. Uhl, "Matching Pursuit Projection --- A Parallelization", In G. Ok\vsa, R. Trobec, A. Uhl, M. Vajter\vsic, R. Wyrzykowski, P. Zinterhof, editors, Proceedings of the International Workshop on Parallel Numerics (Parnum 2000), pp. 165-178, Bratislava, Slovakia, Sep. 2000
34. [Kutil00b] R. Kutil, A. Uhl, "Architecture Comparison in a High Bandwidth Application", In G. Ok\vsa, R. Trobec, A. Uhl, M. Vajter\vsic, R. Wyrzykowski, P. Zinterhof, editors, Proceedings of the International Workshop on Parallel Numerics (Parnum 2000), pp. 219-228, Bratislava, Slovakia, Sep. 2000
35. [Kutil00c] R. Kutil, "High Dimensional Wavelet Transforms on MIMD Architectures", Master thesis, Dept. of Computer Science, Salzburg University, Austria
36. [Jellinek00a] Brigitte Jellinek, "Invisible Watermarking of Digital Images for Copyright Protection", Master thesis, Department of Scientific Computing, University of Salzburg, Austria
37. [Feil99a] M. Feil, A. Uhl, "Algorithms and Programming Paradigms for 2-D Wavelet Packet Decomposition on Multicomputers and Multiprocessors", In P. Zinterhof, M. Vajtersic, A. Uhl, editors, Parallel Computation. Proceedings of ACPC'99, pp. 367-376, Lecture Notes on Computer Science, 1557, Springer-Verlag, 1999
38. [Feil99c] M. Feil, A. Uhl, "Real-time Image Analysis using Wavelets: the ``\`A Trous'' Algorithm on MIMD Architectures", IS&T/SPIE's Electronic Imaging International Technical Group Newsletter 9:2, pp. 4-5, 1999
39. [Feil99b] M. Feil, A. Uhl, "Real-time Image Analysis using Wavelets: the ``\`A Trous'' Algorithm on MIMD Architectures", In D. Sinha, editor, Real-Time Imaging IV, pp. 56-65, SPIE Proceedings, 3645, 1999
40. [Feil99d] M. Feil, A. Uhl, M. Vajtersic, "Computation of the continuous wavelet transform on massively parallel SIMD arrays", Parallel Processing Letters 9:4, pp. 453-466, 1999
41. [Feil99f] M. Feil, R. Kutil, A. Uhl, "Parallel Wavelet Transforms on Multiprocessors", In P. Amestoy and others, editors, Parallel Processing. Proceedings of EuroPar'99, pp. 1013-1017, Lecture Notes on Computer Science, 1685, Springer-Verlag, 1999
42. [Haemmerle99a] J. Hämmerle, A. Uhl, "Classification Based Speed-Up Methods for Fractal Image Compression on Multicomputers", In P. Zinterhof, M. Vajtersic, A. Uhl, editors, Parallel Computation. Proceedings of ACPC'99, pp. 276-285, Lecture Notes on Computer Science, 1557, Springer-Verlag, 1999
43. [Bruckmann99b] A. Bruckmann, H. Flatscher, Th. Schell, A. Uhl, "Adaptive Wavelet Techniques for Compressing Digital Mammograms (Invited Paper)", TASK Quarterly (Special Issue on Informatics in Medicine) 3:4, pp. 381-396, 1999
44. [Kutil99a] R. Kutil, A. Uhl, "Hardware and Software Aspects for 3-D Wavelet Decomposition on Shared Memory MIMD computers", In Peter Zinterhof, M. Vajtersic, Andreas Uhl, editors, Parallel Computation. Proceedings of ACPC'99, pp. 347-356, Lecture Notes on Computer Science, 1557, Springer-Verlag, 1999
45. [Zinterhof99a] P. Zinterhof, M. Vajtersic, A. Uhl, "Parallel Computation. Proceedings of the 4th International Conference of the ACPC (ACPC'99)", Lecture Notes on Computer Science, 1557, Springer-Verlag, 1999
46. [Steiner99a] K. Steiner, Th. Schell, W. Lottermoser, "A Time-Minimizing Hybrid-Method for Fitting Complex Mössbauer Spectra", Physics and Chemistry of Minerals, Springer 27, pp. 34-40, 1999
47. [Schneider99a] P. Schneider, "Matching Pursuit Image and Video Compression - Speedup Techniques", Master thesis, University of Salzburg
48. [Kutil99c] R. Kutil, A. Uhl, "Comparison of PVM and MPI on SGI Multiprocessors in a High Bandwidth Multimedia Application", In J. Dongarra, E. Luque, T. Margalef, editors, Recent Advances in Parallel Virtual Machine and Message Passing Interface. 6th European PVM/MPI Users Group Meeting, pp. 149-156, Lecture Notes on Computer Science, 1697, Springer-Verlag, Sep. 1999
49. [Pommer99c] A. Pommer, "Observations on the Scheduling of the SGI Power C System", In R. Wyrzykowski, B. Mochnacki, H. Piech, J. Szopa, editors, Proceedings of the Third International Conference on Parallel Processing and Applied Mathematics, pp. 337-347, Kazimierz Dolny, Poland, Sep. 1999
50. [Hufnagl99a] C. Hufnagl, A. Uhl, "Fast Block-Matching Algorithms for High-Resolution Video Compression", In Proceedings of the International Picture Coding Symposium (PCS'99), pp. 295-298, Portland, Oregon USA, April 1999
51. [Freina99a] Th. Freina, A. Uhl, "Hybrid Image Coding Using Fractal Prediction", In Proceedings of the International Picture Coding Symposium (PCS'99), pp. 133-136, Portland, Oregon USA, April 1999
52. [Schell99b] Th. Schell, K. Steiner, W. Lottermoser, G. Amthauer, "Eine neue Hybrid Methode (HM) zur Anpassung komplexer Mö\ssbauer-Spektren", In 7. Jahrestagung der Deutschen Gesellschaft für Kristallographie (DGK), pp. 109, München, D, R. Oldenbourg Verlag, March 1999
53. [Schell99a] Th. Schell, W. Lottermoser, K. Steiner, "A Time-Minimizing Hybrid-Method for Fitting Complex Mössbauer Spectra", In Journal of Conference Abstracts, pp. 659, Strasbourg, France, 4, Cambride Publications, March 1999
54. [Bruckmann99a] A. Bruckmann, A. Uhl, "Ein Vergleich von Wavelet und JPEG basierten selektiven Methoden im Bereich der medizinischen Bildkompression", In H. Evers, G. Glombitza, T. Lehmann, H.-P. Meinzer, editors, Proceedings des Workshops Bildverarbeitung fuer die Medizin 1999, pp. 216-220, Informatik Aktuell, Springer-Verlag, March 1999
55. [Pommer99b] A. Pommer, "Fractal Video Compression on Shared Memory Systems", In P. Zinterhof, M. Vajtersic, A. Uhl, editors, Parallel Computation. Proceedings of ACPC'99, pp. 317-326, Lecture Notes on Computer Science, 1557, Springer-Verlag, Feb. 1999
56. [Pommer99a] A. Pommer, "Fractal Video Compression --- Basics, 2D, 3D and Parallel Algorithms", Master thesis, Dept. of Computer Science, Salzburg University, Austria
57. [Feil98d] M. Feil, "Wavelet transforms on parallel architectures", Master thesis, University of Salzburg
58. [Feil98b] M. Feil, A. Uhl, M. Vajtersic, "Continous Wavelet Transform on Massively Parallel Arrays", In E.H. D'Hollander, G.R. Joubert, F.J. Peters, U. Trottenberg, R. Völpel, editors, Parallel Computing: Fundamentals, Applications and New Directions, pp. 207-210, Advances in Parallel Computing, 12, North Holland, 1998
59. [Bruckmann98b] A. Bruckmann, A. Uhl, "Selective Medical Image Compression using Wavelet Techniques", Journal of Computing and Information Technology (Special Issue on Biomedical Image Processing and Analysis) 2:6, pp. 203-213, 1998
60. [Haemmerle98a] J. Hämmerle, A. Uhl, "Improving the efficiency of parallel fractal compression using localized domain-pools", In S. Panchanathan, F. Sijstermans, S.I. Sudharsanan, editors, Multimedia Hardware Architectures 1998, pp. 90-98, SPIE Proceedings, 3311, 1998
61. [Haemmerle98b] J. Hämmerle, A. Uhl, "Fractal Compression of Satellite Images: Combining Parallel Processing and Geometric Searching", In E.H. D'Hollander, G.R. Joubert, F.J. Peters, U. Trottenberg, R. Völpel, editors, Parallel Computing: Fundamentals, Applications and New Directions, pp. 121-128, Advances in Parallel Computing, 12, North Holland, 1998
62. [Jerabek98a] B. Jerabek, P. Schneider, A. Uhl, "Comparison of Lossy Image Compression Methods applied to Photorealistic and Graphical Images using Public Domain Sources", Research Institute for Softwaretechnology, University of Salzburg, RIST++15/98, 1998
63. [Hufnagl98a] C. Hufnagl, "Efficient motion estimation algorithms for digital video compression", Master thesis, University of Salzburg
64. [Pommer98b] A. Pommer, "A Survey of Fractal Video Coding", In B. Zovko-Cihlar, S. Grgi\'c, M. Grgi\'c, editors, International Workshop on Systems, Signals and Image Processing, pp. 55-58, Zagreb, Croatia, June 1998
65. [Feil98a] M. Feil, A. Uhl, "Wavelet Packet Decomposition and Best Basis Selection on Massively Parallel SIMD Arrays", In Proceedings of the International Conference ``Wavelets and Multiscale Methods'' (IWC'98), Tangier, 1998, INRIA, Rocquencourt, April 1998
66. [Bruckmann98a] A. Bruckmann, Th. Schell, A. Uhl, "Evolving Subband Structures for Wavelet Packet based Image Compression using Genetic Algorithms with Non-additive Cost Functions", In Proceedings of the International Conference ``Wavelets and Multiscale Methods'' (IWC'98), Tangier, 1998, INRIA, Rocquencourt, April 1998
67. [Freina98a] Th. Freina, A. Uhl, "Predictive fractal image coding: hybrid algorithms and compression of residuals", In Proceedings Data Compression Conference (DCC'98), pp. 549, IEEE Computer Society Press, March 1998
68. [Pommer98a] A. Pommer, C. Hufnagl, A. Uhl, "Fractal Motion Compensation", In S.A. Rajala, M. Rabbani, editors, Visual Communications and Image Processing '98, pp. 1050-1061, SPIE Proceedings, 3309, Jan. 1998
69. [Reichl98a] M. Reichl, A. Uhl, "Predictive and Direct Fractal Quantization of the Wavelet Packet Domain", In Visual Communications and Image Processing '98, pp. 1062-1071, SPIE Proceedings, 3309, Jan. 1998
70. [Bruckmann97a] A. Bruckmann, J. Hämmerle, M. Reichl, A. Uhl, "Hybrid fractal/wavelet image compression in a high performance computing environment", In B. Hertzberger, P. Sloot, editors, High Performance Computing and Networking. Proceedings of HPCN Europe 1997, pp. 117-126, Lecture Notes on Computer Science, 1225, Springer-Verlag, 1997
71. [Uhl97c] A. Uhl, "Generalized wavelet decompositions in image compression: arbitrary subbands and parallel algorithms", Optical Engineering 36:5, pp. 1480-1487, 1997
72. [Uhl97b] A. Uhl, J. Hämmerle, "Fractal Image Compression on MIMD Architectures I: Basic Algorithms", Parallel Algorithms and Applications 11:3-4, pp. 187-204, 1997
73. [Kraemer97a] D. Krämer, A. Bruckmann, T. Freina, M. Reichl, A. Uhl, "Comparison of wavelet, fractal and DCT based methods on the compression of prediction-error images", In Proceedings of the International Picture Coding Symposium (PCS'97), pp. 393-397, ITG-Fachberichte, 143, VDE-Verlag, Berlin, Offenbach, Sep. 1997
74. [Bruckmann97c] A. Bruckmann, "Selective and hybrid image compression with wavelet methods", Master thesis, University of Salzburg
75. [Bruckmann97b] A. Bruckmann, A. Uhl, "Enhancing wavelet image compression by partial fractal coding of spatial self-similarities", In Proceedings of the International Picture Coding Symposium (PCS'97), pp. 331-336, ITG-Fachberichte, 143, VDE-Verlag, Berlin, Offenbach, Sep. 1997
76. [Hufnagl97a] C. Hufnagl, J. Hämmerle, A. Pommer, A. Uhl, M. Vajtersic, "Fractal image compression on massively parallel arrays", In Proceedings of the International Picture Coding Symposium (PCS'97), pp. 77-80, ITG-Fachberichte, 143, VDE-Verlag, Berlin, Offenbach, Sep. 1997
77. [Reichl97a] M. Reichl, J. Hämmerle, A. Uhl, "Fractal quantizers for the wavelet transform domain", In Proceedings of the International Picture Coding Symposium (PCS'97), pp. 207-212, ITG-Fachberichte, 143, VDE-Verlag, Berlin, Offenbach, Sep. 1997
78. [Haemmerle97b] J. Hämmerle, "Load balancing strategies for Parallel Fractal Image Compression", In R. Wyrzykowski, H. Piech, B. Mochnacki, M. Vajtersic, P. Zinterhof, editors, Proceedings of the International Workshop on Parallel Numerics (Parnum'97), pp. 72-84, Sep. 1997
79. [Haemmerle97c] J. Hämmerle, A. Uhl, "Fractal Image Compression on Multiprocessors and Multicomputers", In R. Wyrzykowski, H. Piech, J. Szopa, editors, Proc. of the International Conference on Parallel Processing and Applied Mathematics (PPAM'97), pp. 433-441, Zakopane, Poland, Sep. 1997
80. [Uhl97d] A. Uhl, A. Bruckmann, "Double tree wavelet image compression on parallel MIMD computers", In Proceedings of the sixth International Conference on Image Processing and its Applications (IPA'97), pp. 179-183, Dublin, Ireland, IEE Conference Publications, 443, July 1997
81. [Haemmerle97a] J. Hämmerle, A. Uhl, "Approaching Real-Time Processing for Fractal Compression", In J. Biemond, E.J. Delp, editors, Visual Communications and Image Processing '97, pp. 514-525, San Jose, SPIE Proceedings, 3024, Feb. 1997
82. [Uhl97a] A. Uhl, J. Hämmerle, "Issues in Implementing Block-Based Image Compression Techniques on Parallel MIMD Architectures", In J. Biemond, E.J. Delp, editors, Visual Communications and Image Processing '97, pp. 494-501, San Jose, SPIE Proceedings, 3024, Feb. 1997
83. [Haemmerle96c] J. Hämmerle, "Combining Sequential Speed-up Techniques and Parallel Computing for Fractal Image Compression", In R. Trobec, M. Vajtersic, P. Zinterhof, J. Slic, B. Robic, editors, Proceedings of the International Workshop on Parallel Numerics (Parnum'96), pp. 220-233, 1996
84. [Uhl96b] A. Uhl, J. Hämmerle, "Image Compression on a Workstationcluster using PVM", In A. Bode, J. Dongarra, V. Sunderam, editors, Parallel Virtual Machine -- EuroPVM'96, pp. 301-304, Lecture Notes on Computer Science, 1156, Springer, 1996
85. [Uhl96h] A. Uhl, "Adaptive Quadtree based Wavelet Packet Image Block-Coding on MIMD parallel architectures", In R. Trobec, M. Vajtersic, P. Zinterhof, J. Slic, B. Robic, editors, Proceedings of the International Workshop on Parallel Numerics (Parnum'96), pp. 102-112, 1996
86. [Uhl96c] A. Uhl, "Adaptive wavelet image block coding", In H.H. Szu, editor, Wavelet Applications III, pp. 127-135, Orlando, FL, USA, SPIE Proceedings, 2762, April 1996