Marcus Ciolkowski Oliver Laitenberger Sira Vegas Stefan Biffl Practical Experiences in the Design and Conduct of Surveys in Empirical Software Engineering. 104-128 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=2765&spage=104 2003 conf/esernet/2003 ESERNET db/conf/esernet/esernet2003.html#CiolkowskiLVB03