Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{CMH_1949__23_138974, author = {Thiem Le-Van}, title = {\"Uber das {Umkehrproblem} der {Wertverteilungslehre.}}, journal = {Commentarii mathematici Helvetici}, pages = {26--49}, publisher = {mathdoc}, volume = {23}, year = {1949}, zbl = {0041.04503}, url = {http://geodesic.mathdoc.fr/item/CMH_1949__23_138974/} }
Thiem Le-Van. Über das Umkehrproblem der Wertverteilungslehre.. Commentarii mathematici Helvetici, Tome 23 (1949), pp. 26-49. http://geodesic.mathdoc.fr/item/CMH_1949__23_138974/