@inproceedings{HT-1991-GarzottoPS,
	author        = "Franca Garzotto and Paolo Paolini and Daniel Schwabe",
	booktitle     = "{Proceedings of the Third Conference on Hypertext}",
	cdrom         = "HT1991/P313.pdf",
	doi           = "10.1145/122974.123004",
	isbn          = "0-89791-461-9",
	pages         = "313--328",
	publisher     = "{ACM}",
	title         = "{HDM — A Model for the Design of Hypertext Applications}",
	year          = 1991,
}