Multi-granularity Locks in an Object-Oriented Database by Roberto Zicari · Published January 1, 2006 · Updated February 18, 2014 Daniel F. Lieuwen, H.V. Jagadish, AT&T Bell Labs DOWNLOAD (PDF)
Experiences using an ODBMS for a High-Volume Internet Banking System October 1, 2003 by Roberto Zicari · Published October 1, 2003 · Last modified February 16, 2014
SQBL Object Views – Unlimited Mapping and Updatability January 1, 2008 by Roberto Zicari · Published January 1, 2008 · Last modified February 18, 2014
The Definite Guide to db4o June 1, 2006 by Roberto Zicari · Published June 1, 2006 · Last modified January 3, 2015