@inproceedings{HCI-SEC-1997-Keller,
	author        = "K. D. Keller",
	booktitle     = "{Proceedings of the Seventh International Conference on Human-Computer Interaction. Volume 2: Social and Ergonomic Considerations}",
	isbn          = "0-444-82183-X",
	pages         = "621--624",
	publisher     = "{Elsevier}",
	title         = "{Usability in the Perspective of Work Environment}",
	year          = 1997,
}