1. ``Orthonormal bases of compactly supported wavelets'', Ingrid Daubechies, Communications on Pure and Applied Mathematics, 41(7):909--996, October 1988.
2. Wavelet Image Compression Construction Kit, Geoff Davis, http://www.cs.dartmouth.edu/~gdavis/.
3. Introduction to Information Theory and Data Compression, D. Hankerson, G.A. Harris and P.D. Johnson, Jr., CRC Press, 1998.
4. JPEGtool User's Guide, documentation and software available via http://www.dms.auburn.edu/compression/, 1997.
5. Independent JPEG Group (IJG): JPEG software release 6 is available electronically from ftp://ftp.uu.net/graphics/jpeg, August 1995. E-mail contact: jpeg-info@uunet.uu.net.
6. ``Octave: a Free High-Level Language for Mathematics'', Malcolm Murphy, Linux Journal, July 1997.
7. JPEG Still Image Data Compression Standard, W.B. Pennebaker and J.L. Mitchell, Van Nostrand Reinhold, New York, 1992.
8. ``History of the Portable Network Graphics (PNG) Format'', Greg Roelofs, Linux Journal, April 1997.
9. ``Wavelets'', American Scientist, Gilbert Strang, May/June 1994.
10. ``The JPEG Still Picture Compression Standard'', Gregory K. Wallace, Communications of the ACM, April 1991. A revised version is available with the IJG's sources (see 5).
11. Waterloo Fractal Compression Project, http://links.uwaterloo.ca/, contains a pointer to the ``Waterloo BragZone'' which introduces a test suite and includes test results from various coders.