Set-Term Matching in Logic Programming. - Natraj Arni; Sergio Greco; Domenico Saccà (ICDT, 1992)

Negation and Aggregates in Recursive Rules: the LDL++ Approach. - Carlo Zaniolo; Natraj Arni; KayLiang Ong (DOOD, 1993)

A Deductive Database Solution to Intelligent Information Retrieval from Legacy Databases. - KayLiang Ong; Natraj Arni; Christine Tomlinson; C. Unnikrishnan; Darrell Woelk (DASFAA, 1995)

Matching of Bounded Set Terms in the Logic Language LDL++. - Natraj Arni; Sergio Greco; Domenico Saccà (J. Log. Program., 1996)