1. Peer-pair psychotherapy;Birnbaum;J. Clin. Child Psychol.,1975
2. Una experiencia analitica;Evelson;Rev. Psicoanal.,1958
3. A model for the stages of development in social work groups;Garland,1973
4. Innovations in group psychotherapy with preadolescents;Ginott,1968
5. Group therapy special section meeting;Lawrey,1963