 <A HREF="http://www.jbpub.com/nbis/abdata.htm">Abstract Data Types: Specifications, Implementations, and Applications</A>, with <A HREF="http://www.cs.utexas.edu/users/walkerh">Henry Walker, <A HREF="http://www.jbpub.com/dcheath.htm">Jones and Bartlett</A> <br>
