Back of photo of Avram, Dona and Matilda Kalef with friends

This is the back of the photo of my mother and father, Avram and Dona Kalef, and my grandmother Matilda Kalef with some other people out in the nature. The photo was taken in Belgrade. Here it says: ?Antonia and Avram Kalef Matilda Kalef with friends?

Photos from this interviewee