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
Object-Oriented or Object-Relational? An Experience Report from a High-Complexity, Long-Term Case Study. July 1, 2010 by Roberto Zicari · Published July 1, 2010 · Last modified February 16, 2014
European Space Agency: Charting the Galaxy with the GAIA satellite and InterSystems Caché. February 1, 2011 by Roberto Zicari · Published February 1, 2011 · Last modified February 16, 2014
030.01 Odra – Object-oriented Rapid Database Application Development January 1, 2007 by Roberto Zicari · Published January 1, 2007 · Last modified February 18, 2014