A pilot study of comparative customer comprehension between extreme x-machine and uml models. - Christopher Thomson; Mike Holcombe; Tony Cowling; Tony Simons 001; George Michaelides (ESEM, 2008)

Measuring fidelity to extreme programming: a psychometric approach. - George Michaelides; Christopher Thomson; Stephen Wood (Empir. Softw. Eng., 2010)

Successful extreme programming: Fidelity to the methodology or good teamworking? - Stephen Wood; George Michaelides; Christopher Thomson (Inf. Softw. Technol., 2013)