Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MZM_1991_50_4_a3, author = {N. A. Bobylev}, title = {The~Helly intersection theorem}, journal = {Matemati\v{c}eskie zametki}, pages = {28--32}, publisher = {mathdoc}, volume = {50}, number = {4}, year = {1991}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1991_50_4_a3/} }
N. A. Bobylev. The~Helly intersection theorem. Matematičeskie zametki, Tome 50 (1991) no. 4, pp. 28-32. http://geodesic.mathdoc.fr/item/MZM_1991_50_4_a3/