@misc{Funk1991, author = {Rainer Funk}, title = {Prologo y Epilogo}, booktitle = {E. Fromm, Del tener al ser. Obra P{\´o}stuma, 1), Barcelona (Paid{\´o}s) 1991, pp. 11-13 and 155-158.}, type = {foreword}, year = {1991}, }