@article{1178245480, author = {Sagawa, Akira}, title = {A note on a Riemann surface with null boundary}, journal = {Tohoku Math. J. (2)}, volume = {3}, number = {3}, year = {1951}, pages = { 273-276}, language = {en}, url = {http://dml.mathdoc.fr/item/1178245480} }
Sagawa, Akira. A note on a Riemann surface with null boundary. Tohoku Math. J. (2), Tome 3 (1951) no. 3, pp. 273-276. http://gdmltest.u-ga.fr/item/1178245480/