Persistent and Shared Objects in Trellis/Owl. - Patrick O'Brien; Bruce Bullis; Craig Schaffert (OODBS, 1986)

An Introduction to Trellis/Owl. - Craig Schaffert; Topher Cooper; Bruce Bullis; Mike Killian; Carrie Wilpolt (OOPSLA, 1986)

An Object-Oriented Database for Trellis. - Patrick O'Brien; Bruce Bullis; Craig Schaffert (On Object-Oriented Database System, 1991)