@inproceedings{ITiCSE-1998-PrestonS,
	author        = "Jon A. Preston and Russell L. Shackelford",
	booktitle     = "{Proceedings of the Sixth Annual Conference on the Teaching of Computing and Third Conference on Innovation and Technology in Computer Science Education}",
	doi           = "10.1145/282991.283121",
	isbn          = "1-58113-000-7",
	pages         = "193--198",
	publisher     = "{ACM}",
	title         = "{A system for improving distance and large-scale classes}",
	year          = 1998,
}