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)
What’s Next for Graphs: Neo4j for Google Cloud April 9, 2019 by Roberto Zicari · Published April 9, 2019