https://scholar.google.com/scholar?hl=iw&as_sdt=0%2C5&q=Ferber%2C+S.G.+%282004%29.+Some+developmental+facets+of+silence%3A+case+study+of+a+struggle+to+have+a+proximity+figure.++British+Journal+of+Psychotherapy%2C+20%283%29%2C+315-332&btnG
