@article{1183423627, author = {Sisam, C. H.}, title = {On a configuration on certain surfaces}, journal = {Bull. Amer. Math. Soc.}, volume = {23}, number = {2}, year = {1916}, pages = { 381-383}, language = {en}, url = {http://dml.mathdoc.fr/item/1183423627} }
Sisam, C. H. On a configuration on certain surfaces. Bull. Amer. Math. Soc., Tome 23 (1916) no. 2, pp. 381-383. http://gdmltest.u-ga.fr/item/1183423627/