@inproceedings{HT-1998-SilvaDDO,
	author        = "Denise Pilar da Silva and Rafaël Van Durm and Erik Duval and Henk J. Olivié",
	booktitle     = "{Proceedings of the Ninth Conference on Hypertext and Hypermedia: Links, Objects, Time and Space — Structure in Hypermedia Systems}",
	cdrom         = "HT1998/P291.pdf",
	doi           = "10.1145/276627.276664",
	pages         = "291--292",
	publisher     = "{ACM}",
	title         = "{Adaptive Navigational Facilities in Educational Hypermedia}",
	year          = 1998,
}