VIAF http://viaf.org/viaf/91753599
ISNI http://isni-url.oclc.nl/isni/0000000118451772
Sudoc http://www.idref.fr/077638867
Biblioteca Nacional Francesa http://data.bnf.fr/13519151
Biblioteca Nacional Alemana http://d-nb.info/gnd/136042732
Biblioteca del Congreso de los EEUU http://id.loc.gov/authorities/names/n83194988
Fuente consultada International reporting, 1928-1985, 1987
Información encontrada (edited with general and special introductions_by Heinz Dietrich Fischer in cooperation with Erika Fischer)