A Comparison of the Business Object Notation and the Unified Modeling Language
   A 1999 technical report by Richard F. Paige and Jonathan S. Ostroff. Available in Postscript and PDF format.
   http://www.cs.yorku.ca/techreports/1999/CS-1999-03.html

An Introduction to BON
   Brief, very clear document treats main ideas; text, diagrams, bibliography.
   http://www.cse.yorku.ca/~paige/Bon/bon.html

BON Method
   Treats many aspects of BON: overview, reversibility, contracts, book, BONsai diagram tool; by Kim Waldén, one of BON co-inventors.
   http://www.bon-method.com/index_normal.htm

Seamless Object-Oriented Software Architecture: Analysis and Design of Reliable Systems
   By Kim Waldén, Jean-Marc Nerson; Prentice Hall, 1994, ISBN 0130313033. In development, OO methods stand out in promise for code reuse and making program analysis, design, implementation a seamless process. Free download file, PDF.
   http://www.bon-method.com/book_print_a4.pdf

The BON Analysis and Design Method
   BON: The analysis and design method for reliability, reusability and reversibility; description of benefits and key concepts, with links. Eiffel Software.
   http://archive.eiffel.com/products/bon.html