Authors: Abiteboul S.; Vardi M.Y.; Vianu V.1
Source: Theoretical Computer Science, Volume 149, Number 1, 18 September 1995 , pp. 101-128(28)
Publisher: Elsevier
Language: English
Document Type: Research article
DOI: 10.1016/0304-3975(95)00027-T
Affiliations: 1: CSE C-0114 UC San Diego, La Jolla, CA 92093, USA
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