@article{Widmer, author = {Widmer, Jean}, title = {Fromm et l'Etude de Francfort}, series = {La Libert{\´e}, Fribourg (29. 3. 1980).}, journal = {La Libert{\´e}, Fribourg (29. 3. 1980).}, language = {fr} } @article{Widmer, author = {Widmer, Jean}, title = {Fromm et l'Etude de Francfort}, series = {Le Courrier, Gen{\`e}ve (29. 3. 1980) [= WIDMER, J., 1980.}, journal = {Le Courrier, Gen{\`e}ve (29. 3. 1980) [= WIDMER, J., 1980.}, number = {reprint / Nachdruck}, language = {fr} }