A Framework for Measuring and Evaluating Program Source Code Quality. - Hironori Washizaki; Rieko Namiki; Tomoyuki Fukuoka; Yoko Harada; Hiroyuki Watanabe (PROFES, 2007)

Reusability Metrics for Program Source Code Written in C Language and Their Evaluation. - Hironori Washizaki; Toshikazu Koike; Rieko Namiki; Hiroyuki Tanabe (PROFES, 2012)