Objects and Databases by Roberto Zicari · Published January 1, 1993 · Updated February 24, 2014 Petr, Kroha, Objects and Databases, McGraw-Hill, 1993, ISBN 0077077903.
NoSQL- Einstieg in die Welt nichtrelationaler Web 2.0 Datenbanken. (in German).. September 1, 2010 by Roberto Zicari · Published September 1, 2010 · Last modified February 24, 2014