@article{1183533594, author = {Schrader, Keith}, title = {A generalization of the Helly selection theorem}, journal = {Bull. Amer. Math. Soc.}, volume = {78}, number = {4}, year = {1972}, pages = { 415-419}, language = {en}, url = {http://dml.mathdoc.fr/item/1183533594} }
Schrader, Keith. A generalization of the Helly selection theorem. Bull. Amer. Math. Soc., Tome 78 (1972) no. 4, pp. 415-419. http://gdmltest.u-ga.fr/item/1183533594/