A Study of Human Solutions in eXtreme Programming. - Robert Godfrey Gittins; Sian Hope (PPIG, 2001)

A Comparison of Software Development Process Experiences. - Robert Godfrey Gittins; Julian M. Bass; Sian Hope (XP, 2004)

Strategies in qualitative research methods in the evolution of software development processes. - Robert Godfrey Gittins (2004)