@inproceedings{CSCW-1992-PrakashK,
	author        = "Atul Prakash and Michael J. Knister",
	booktitle     = "{Proceedings of the Fourth ACM Conference on Computer Supported Cooperative Work}",
	doi           = "10.1145/143457.143527",
	isbn          = "0-89791-542-9",
	pages         = "273--280",
	publisher     = "{ACM}",
	title         = "{Undoing Actions in Collaborative Work}",
	year          = 1992,
}