Grigori Melnik Laurie A. Williams Adam Geras International Workshop on Empirical Evaluation of Agile Methods ("The Data Workshop"). 211 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2753&spage=211 2003 conf/xpu/2003xpu XP/Agile Universe db/conf/xpu/xpu2003.html#MelnikWG03