Most of this stuff was stolen as is from a personal site in Israel. Credit: Ehud Lamm mslamm@mscc.huji.ac.il http://purl.oclc.org/NET/ehudlamm
Imagix 4D is a reverse engineering, software metrics and documentation tool for C and C++. (Added at the request of the vendor.)
Whitepapers - Comparing Development Costs of C and Ada, by Stephen F. Zeigler, Ph.D.
Resource Standard Metrics, Source Code Quality and Metrics Tool