@inproceedings{INTERCHI-1993-NielsenP,
	author        = "Jakob Nielsen and Victoria L. Phillips",
	booktitle     = "{Proceedings of the 11th ACM SIGCHI Conference on Human Factors in Computing Systems, jointly organised with the IFIP TC13 International Conference on Human-Computer Interaction}",
	doi           = "10.1145/169059.169173",
	isbn          = "0-89791-575-5",
	pages         = "214--221",
	publisher     = "{ACM}",
	title         = "{Estimating the relative usability of two interfaces: heuristic, formal, and empirical methods compared}",
	year          = 1993,
}