@inproceedings{CHI-2001-KierasMB,
	author        = "David E. Kieras and David Meyer and James A. Ballas",
	booktitle     = "{Proceedings of the 19th ACM SIGCHI Conference on Human Factors in Computing Systems}",
	doi           = "10.1145/365024.365069",
	isbn          = "1-58113-327-8",
	pages         = "128--135",
	publisher     = "{ACM}",
	title         = "{Towards demystification of direct manipulation: cognitive modeling charts the gulf of execution}",
	year          = 2001,
}