In 1960 , he participated along with other Greek artists ( including his wife Eleni ) at the '' Salon de l'art libre '' of Paris . The same year he received the second prize for his study in the national contest for the construction of a monument in memory of the victims of Kalavryta 's massacre while he served as an executive member of the European Culture Society from 1960 till 1968 . Moreover , Zongolopoulos was a regular columnist of society 's magazine '' Comprendre ''
Kalavryta 's massacre
Massacre of Kalavryta
George Zongolopoulos