John Grant, Timos K. Sellis. Extended database logic: Complex objects and deduction. Inf. Sci., 52(1):85-110, 1990. [doi]
@article{GrantS90,
title = {Extended database logic: Complex objects and deduction},
author = {John Grant and Timos K. Sellis},
year = {1990},
doi = {10.1016/0020-0255(90)90037-B},
url = {http://dx.doi.org/10.1016/0020-0255(90)90037-B},
tags = {meta-model, database, logic, Meta-Environment, meta-objects},
researchr = {https://researchr.org/publication/GrantS90},
cites = {0},
citedby = {0},
journal = {Inf. Sci.},
volume = {52},
number = {1},
pages = {85-110},
}