@inproceedings{HCI-ACS-1993-HouwingWA,
	author        = "Edo M. Houwing and Marion Wiethoff and Albert G. Arnold",
	booktitle     = "{Proceedings of the Fifth International Conference on Human-Computer Interaction. Volume 1: Applications and Case Studies}",
	isbn          = "0-444-89540-X",
	pages         = "475--480",
	publisher     = "{Elsevier}",
	title         = "{Usability Evaluation From Users’ Point of View: Three Complementary Measures}",
	year          = 1993,
}