@inproceedings{CHI-1997-Tweedie,
	author        = "Lisa Tweedie",
	booktitle     = "{Proceedings of the 15th ACM SIGCHI Conference on Human Factors in Computing Systems}",
	doi           = "10.1145/258549.258803",
	isbn          = "0-201-32229-3",
	pages         = "375--382",
	publisher     = "{ACM/Addison-Wesley}",
	title         = "{Characterizing Interactive Externalizations}",
	year          = 1997,
}