Analysing, Profiling and Optimising Orthogonal Persistence for Java by Roberto Zicari · Published January 1, 1997 · Updated February 19, 2014 Quintin Cutts, Antony Hosking LINK (PDF)
The Vietnam of Computer Science January 1, 2006 by Roberto Zicari · Published January 1, 2006 · Last modified February 18, 2014
038.02 The JDO Object Model June 1, 2001 by Roberto Zicari · Published June 1, 2001 · Last modified February 18, 2014