@inproceedings{HCI-EI-1999-MarcusAFG99a,
	author        = "Aaron Marcus and John Armitage and Volker Frank and Edward Guttman",
	booktitle     = "{Proceedings of the Eighth International Conference on Human-Computer Interaction. Volume 1: Ergonomics and User Interfaces}",
	isbn          = "0-8058-3391-9",
	pages         = "656--660",
	publisher     = "{Lawrence Erlbaum}",
	title         = "{User-Interface Design for Online Transactions: Planet SABRE Air-Travel Booking}",
	year          = 1999,
}