Simple Object Persistence with the db4o Object Database by Roberto Zicari · Published December 1, 2004 · Updated February 18, 2014 Jim Paterson, Bell College Describes the use of the db4o object database. LINK
Debunking Object-Database Myths October 1, 1997 by Roberto Zicari · Published October 1, 1997 · Last modified February 16, 2014
ODE Object Database January 1, 1996 by Roberto Zicari · Published January 1, 1996 · Last modified May 9, 2014
Optimizing And Parallelizing Loops In Object-Oriented Database Programming Languages January 1, 1992 by Roberto Zicari · Published January 1, 1992 · Last modified February 18, 2014