Evaluating Apache Cassandra as a Cloud Database by Roberto Zicari · Published November 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
A write-performance improvement of ZABBIX with NoSQL databases and HistoryGluon January 1, 2013 by Roberto Zicari · Published January 1, 2013 · Last modified February 16, 2014