OntoWeb - A Semantic Web Community Portal. - Peter Spyns; Daniel Oberle; Raphael Volz; Jijuan Zheng; Mustafa Jarrar; York Sure; Rudi Studer; Robert Meersman (PAKM, 2002)

A Formalism of Contextualized Predicate Calculus for Information Integration. - Jijuan Zheng (OTM Workshops, 2003)