We refer the reader to the acknowledgments for Volume 1 for a list of colleagues to whom we are indebted for contributions to our overall approach.

With respect to Volume 3, we would particularly like to thank Pete Coad, Jr. and Charles S. Hendrickson for their detailed technical reviews. Also, we are grateful to John Shuttleworth, the author of the original version of the SILLY system from which our implementation model derives.

Jean Atelsek served as our primary editor for Volumes 2 and 3, and we are grateful for her perceptive comments and for her patience.

Finally, we thank Gerry Madigan and the Yourdon Press editorial staff.