@inproceedings{HT-1987-Collier,
	author        = "George H. Collier",
	booktitle     = "{Proceedings of the First Conference on Hypertext}",
	cdrom         = "HT1987/P269.pdf",
	doi           = "10.1145/317426.317446",
	isbn          = "0-89791-340-X",
	pages         = "269--289",
	publisher     = "{ACM}",
	title         = "{Thoth-II: Hypertext with Explicit Semantics}",
	year          = 1987,
}