Do we really need SQA to produce quality software?: no! well maybe. it depends. yes! - Joel Henry; Robert Blasewitz (ACM SIGSOFT Softw. Eng. Notes, 1994)

Quantitative evaluation of software process improvement. - Joel Henry; Allan Rossman; John Snyder (J. Syst. Softw., 1995)

Defining and Implementing a Measurement-based Software Maintenance Process. - Joel Henry; Robert Blasewitz; David Kettinger (J. Softw. Maintenance Res. Pract., 1996)