- Set Theory, Logic and their Limitations by Moshe Machover, October, 1995
- Learning to Reason: An Introduction to Logic, Sets, and Relations by Nancy Rodgers, 15 July, 2000
- An Introduction to Fuzzy Logic and Fuzzy Sets (Advances in Soft Computing) by James J. Buckley, Esfandiar Eslami, et all March, 2002
- Geometry of State Spaces of Operator Algebras (Mathematics. Theory and Applications) by Erik M. Alfsen, Frederic W. Shultz, January, 2003
- Data Engineering: Fuzzy Mathematics in Systems Theory and Data Analysis by Olaf Wolkenhauer, 06 July, 2001
- Sorting (Math Counts) by Henry Pluckrose, April, 1900
- Fuzzy Cluster Analysis : Methods for Classification, Data Analysis and Image Recognition by Frank Höppner, Rudolf Kruse, et all July, 1999
- Sperner Theory by Konrad Engel, February, 1997
- What's Different? (Look & Learn Series) by George Siede, Donna Preis, et all December, 1993
- Matching (Look & Learn Series) by George Siede, Donna Preis, et all December, 1993
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