Remarks on the comments of B. Langefors on our paper - Semantics of data bases: The semantics of data models.

Horst Biller Erich J. Neuhold Remarks on the comments of B. Langefors on our paper - Semantics of data bases: The semantics of data models. 35-36 1978 3 Inf. Syst. 1 db/journals/is/is3.html#BillerN78a