Robert Demolombe. An Extended Relational Algebra on Abstract Objects for Summarizing Answers to Queries. Fundamenta Informaticae, 57(1):1-15, 2003. [doi]
@article{Demolombe03:0,
title = {An Extended Relational Algebra on Abstract Objects for Summarizing Answers to Queries},
author = {Robert Demolombe},
year = {2003},
url = {http://iospress.metapress.com/openurl.asp?genre=article&issn=0169-2968&volume=57&issue=1&spage=1},
tags = {relational algebra, algebra},
researchr = {https://researchr.org/publication/Demolombe03%3A0},
cites = {0},
citedby = {0},
journal = {Fundamenta Informaticae},
volume = {57},
number = {1},
pages = {1-15},
}