@inproceedings{SEKE-1990-Bottcher,
	author        = "Stefan Böttcher",
	booktitle     = "{Proceedings of the Second International Conference on Software Engineering and Knowledge Engineering}",
	pages         = "171--176",
	publisher     = "{Knowledge Systems Institute}",
	title         = "{Development and Programming of Deductive Databases with PROTOS-L}",
	year          = 1990,
}