Interoperability, Distributed Applications and Distributed Databases: The Virtual Table Interface. - Michael Stonebraker; Paul Brown; Martin Herbach (IEEE Data Eng. Bull., 1998)

Requirements for XML Functionality in Relational Database Management Systems - An Informix Perspective. - Paul Brown; Martin Herbach; Akmal B. Chaudhri; Alexander Koerner (DEXA Workshop, 2001)