@inproceedings{CHI-1989-Malone,
	author        = "Thomas W. Malone",
	booktitle     = "{Proceedings of the Seventh ACM SIGCHI Conference on Human Factors in Computing Systems}",
	doi           = "10.1145/67449.67478",
	pages         = "145--146",
	publisher     = "{ACM}",
	title         = "{Center for coordination science, MIT}",
	year          = 1989,
}