Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MZ_1930__32_168241, author = {L., Heffter}, title = {\"Uber den {Cauchyschen} {Integralsatz}}, journal = {Mathematische Zeitschrift}, pages = {476--480}, publisher = {mathdoc}, volume = {32}, year = {1930}, zbl = {56.0958.01}, url = {http://geodesic.mathdoc.fr/item/MZ_1930__32_168241/} }
L., Heffter. Über den Cauchyschen Integralsatz. Mathematische Zeitschrift, Tome 32 (1930), pp. 476-480. http://geodesic.mathdoc.fr/item/MZ_1930__32_168241/