@article{1200685928, author = {Yamabe, Hidehiko}, title = {On an extension of the Helly's theorem}, journal = {Osaka Math. J.}, volume = {2}, number = {1}, year = {1950}, pages = { 15-17}, language = {en}, url = {http://dml.mathdoc.fr/item/1200685928} }
Yamabe, Hidehiko. On an extension of the Helly's theorem. Osaka Math. J., Tome 2 (1950) no. 1, pp. 15-17. http://gdmltest.u-ga.fr/item/1200685928/