@article{DBLP:journals/isci/JurgensenS87,
author = {Helmut J{\"u}rgensen and
Dan A. Simovici},
title = {Towards an abstract theory of dependency constraints in
relational databases},
journal = {Inf. Sci.},
volume = {41},
number = {1},
year = {1987},
pages = {43-60},
ee = {http://dx.doi.org/10.1016/0020-0255(87)90004-1},
bibsource = {DBLP, http://dblp.uni-trier.de}
}