XQuery Implementation in a Relational Database System. - Shankar Pal; Istvan Cseri; Oliver Seeliger; Michael Rys; Gideon Schaller; Wei Yu; Dragan Tomic; Adrian Baras; Brandon Berg; Denis Churin; Eugene Kogan (VLDB, 2005)

Optimizing Similar Scalar Subqueries for XML Processing in Microsoft SQL Server. - Adrian Baras; César A. Galindo-Legaria; Torsten Grabs; Babu Krishnaswamy; Shankar Pal (ICDE, 2007)