T. Wright, и A. Cockburn. AUIC '05: Proceedings of the Sixth Australasian conference on User interface, стр. 55--62. Darlinghurst, Australia, Australia, Australian Computer Society, Inc., (2005)
B. Moskal, D. Lurie, и S. Cooper. SIGCSE '04: Proceedings of the 35th SIGCSE technical symposium on Computer science education, стр. 75--79. New York, NY, USA, ACM, (2004)