Software Modeling and Measurement: The Goal/Question/Metric Paradigm
Basili, V. 1992. "Software Modeling and Measurement: The Goal/Question/Metric Paradigm". College Park, MD, USA: University of Maryland. Technical Report CS-TR-2956. Accessed on August 28, 2012. Available at http://www.cs.umd.edu/~basili/publications/technical/T78.pdf.
This source is considered a primary reference for the Assessing Systems Engineering Performance of Business and Enterprises article.
The full text of this source is available at the University of Maryland website.