(2006) An empirical study of relationships among extreme programming engineering activities. Information and Software Technology Journal, 48. pp. 1068-1072.

(2005) An empirical study of system design instability metric and design evolution in an agile software process. Journal of Systems and Software, 74 (3). pp. 269-274.

(2003) An Empirical Validation of Object-Oriented Metrics in Two Different Iterative Software Processes. IEEE Transactions on Software Engineering, 29 (11). pp. 1043-1049.

(1999) Software Metrics and Object-Oriented System Evolution. In: 3rd World Multiconference on Systemics, Cybernetics and Informatics and 5th International Conference on Information Systems Analysis and Synthesis (ISAS ’99), June, 1999, Orlando, Florida.

(2000) An Empirical Study of Java Design Efficiency in a Client-Sever Database System. In: ACXIOM Spring 2000 symposium, March, 2000, Little Rock, AR.

(2000) An Empirical Study of Extreme Programming. In: International Conference on Advances in Infrastructure for Electronic Business, Science, and Education on the Internet (Invited Paper), July 2000, L’Aquila, Italy.

(2001) An Empirical Study of Refactoring, New Design, and Error-Fix Efforts in Extreme Programming. In: 5th World Multiconference on Systemics, Cybernetics and Informatics (SCI 2001), July 2001, Orlando, Florida.

(1998) The PRAXIS Prototype, a Browser/Java Applet Client- Server System. In: ACXIOM Fall 1998 symposium, November 1998, Little Rock, AR.

(2002) An Empirical Study of XP Effort Distribution. In: COCOMO Seminar, University of Southern California, October 2002, California.