Big Data- Beyond the Hype by Roberto Zicari · Published October 1, 2011 · Updated February 16, 2014 DataStax white paper. DOWNLOAD (PDF)
2013 Gartner Magic Quadrant for Operational Database Management Systems . March 23, 2014 by Roberto Zicari · Published March 23, 2014 · Last modified July 25, 2014
Using Object Database db4o as Storage Provider in Voldemort September 1, 2010 by Roberto Zicari · Published September 1, 2010 · Last modified February 16, 2014