Ingrid Freidenbergs, Ora Ezrachi, Linda Levine, Wayne A. Gordon, Mary Hibbard, Carole Wolf, Leonard Diller, Robert Lipkins, David Lucido,
Efficacy of psychosocial intervention with cancer patients. Journal of Consulting and Clinical Psychology. ,vol. 48, pp. 743- 759 ,(1980) ,
10.1037//0022-006X.48.6.743