L. J. Campbell, Terry A. Halpin, Henderik Alex Proper. Conceptual Schemas with Abstractions: Making Flat Conceptual Schemas More Comprehensible. Data \& Knowledge Engineering, 20(1):39-85, 1996. [doi]
@article{CampbellHP96,
title = {Conceptual Schemas with Abstractions: Making Flat Conceptual Schemas More Comprehensible},
author = {L. J. Campbell and Terry A. Halpin and Henderik Alex Proper},
year = {1996},
doi = {10.1016/0169-023X(96)00005-5},
url = {http://dx.doi.org/10.1016/0169-023X(96)00005-5},
tags = {XML, XML Schema, abstraction},
researchr = {https://researchr.org/publication/CampbellHP96},
cites = {0},
citedby = {0},
journal = {Data \& Knowledge Engineering},
volume = {20},
number = {1},
pages = {39-85},
}