@inproceedings{DBLP:conf/dbpl/ConnorMM91,
author = {Richard C. H. Connor and
David J. McNally and
Ronald Morrison},
title = {Subtyping and Assignment in Database Programming Languages},
booktitle = {DBPL},
year = {1991},
pages = {363-382},
crossref = {DBLP:conf/dbpl/91},
bibsource = {DBLP, http://dblp.uni-trier.de}
}
@proceedings{DBLP:conf/dbpl/91,
editor = {Paris C. Kanellakis and
Joachim W. Schmidt},
title = {Database Programming Languages: Bulk Types and Persistent
Data. 3rd International Workshop, August 27-30, 1991, Nafplion,
Greece, Proceedings},
publisher = {Morgan Kaufmann},
year = {1991},
isbn = {1-55860-242-9},
bibsource = {DBLP, http://dblp.uni-trier.de}
}