@inproceedings{HCI-EI-1999-NoldusKHD,
	author        = "Lucas Noldus and Aurelia Kwint and Wibo ten Hove and Ruud Derix",
	booktitle     = "{Proceedings of the Eighth International Conference on Human-Computer Interaction. Volume 1: Ergonomics and User Interfaces}",
	isbn          = "0-8058-3391-9",
	pages         = "1114--1118",
	publisher     = "{Lawrence Erlbaum}",
	title         = "{Software Tools for Collection and Analysis of Observational Data}",
	year          = 1999,
}