@inproceedings{VLDB-1975-Zimmerman,
	author        = "Klaus Zimmerman",
	booktitle     = "{Proceedings of the First International Conference on Very Large Data Bases}",
	cdrom         = "VLDB75/P535.PDF",
	doi           = "10.1145/1282480.1282539",
	pages         = "535--537",
	publisher     = "{ACM}",
	title         = "{Different Views of a Data Base: Coexistence between Network Model and Relational Model}",
	year          = 1975,
}