@inproceedings{CHI-1996-TweedieSDS,
	author        = "Lisa Tweedie and Robert Spence and Huw Dawkes and Hua Su",
	booktitle     = "{Proceedings of the 14th ACM SIGCHI Conference on Human Factors in Computing Systems: Common Ground}",
	doi           = "10.1145/238386.238587",
	isbn          = "0-89791-777-4",
	pages         = "406--None",
	publisher     = "{ACM}",
	title         = "{Externalising Abstract Mathematical Models}",
	year          = 1996,
}