WYSIWYT testing in the spreadsheet paradigm: an empirical evaluation. - Karen J. Rothermel; Curtis R. Cook; Margaret M. Burnett; Justin Schonfeld; Thomas R. G. Green; Gregg Rothermel (ICSE, 2000)

Using the Cognitive Walkthrough to Improve the Design of a Visual Programming Experiment. - Thomas R. G. Green; Margaret M. Burnett; Amy J. Ko; Karen J. Rothermel; Curtis R. Cook; Justin Schonfeld (VL, 2000)

Improving the Design of Visual Programming Language Experiments Using Cognitive Walkthroughs. - Amy J. Ko; Margaret M. Burnett; Thomas R. G. Green; Karen J. Rothermel; Curtis R. Cook (J. Vis. Lang. Comput., 2002)