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)
The PicoLisp ‘edit’ Function: Browsing a Distributed Database With a Text Editor January 1, 2011 by Roberto Zicari · Published January 1, 2011 · Last modified February 16, 2014
The Definite Guide to db4o June 1, 2006 by Roberto Zicari · Published June 1, 2006 · Last modified January 3, 2015
Simple Object Persistence with the db4o Object Database December 1, 2004 by Roberto Zicari · Published December 1, 2004 · Last modified February 18, 2014