Were the Bell Beakers as social indicators of the Early Bronze Age in Budapest? - Kalicz-Schreiber, Rózsa 1929-2001 (Bell Beakers today. Pottery, people, culture, symbols in prehistoric Europe. Proceedings of the International Colloquium Riva del Garda (Trento, Italy), 11-16 May 1998. Volume 1-2., 2001)