Source code: carry-1.0.tar.gz, November 2003, written by Vo Ngoc Anh, firstname.lastname@example.org.
Manual page PDF, 11 kB.
A general Huffman coder that processes the same data format is also available, see http://people.eng.unimelb.edu.au/ammoffat/mr_coder/; as is another simple integer coder, see http://people.eng.unimelb.edu.au/ammoffat/rbuc/ coder.
An alternative book that includes coverage of compression methods at a higher level, and also information retrieval techniques (read: web search engines) is Managing Gigabytes: Compressing and Indexing Documents and Images by Ian H. Witten, Alistair Moffat, and Timothy C. Bell, Morgan Kaufmann, San Francisco, 1999.
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