@inproceedings{HCI-EI-1999-SmithD,
	author        = "Andy Smith and Lynne Dunckley",
	booktitle     = "{Proceedings of the Eighth International Conference on Human-Computer Interaction. Volume 1: Ergonomics and User Interfaces}",
	isbn          = "0-8058-3391-9",
	pages         = "651--655",
	publisher     = "{Lawrence Erlbaum}",
	title         = "{Combined Metric for User Interface Design and Evaluation}",
	year          = 1999,
}