Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MZ_1956__64_169552, author = {Chuan-Chih Hsiung}, title = {A theorem on surfaces with a closed boundary.}, journal = {Mathematische Zeitschrift}, pages = {41--46}, publisher = {mathdoc}, volume = {64}, year = {1956}, zbl = {0070.16801}, url = {http://geodesic.mathdoc.fr/item/MZ_1956__64_169552/} }
Chuan-Chih Hsiung. A theorem on surfaces with a closed boundary.. Mathematische Zeitschrift, Tome 64 (1956), pp. 41-46. http://geodesic.mathdoc.fr/item/MZ_1956__64_169552/