@inproceedings{CHI-1989-SpenkeB,
	author        = "Michael Spenke and Christian Beilken",
	booktitle     = "{Proceedings of the Seventh ACM SIGCHI Conference on Human Factors in Computing Systems}",
	doi           = "10.1145/67449.67466",
	pages         = "75--80",
	publisher     = "{ACM}",
	title         = "{A spreadsheet interface for logic programming}",
	year          = 1989,
}