Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MO_2002_22_3_a4, author = {A. Yu. Evnin}, title = {Problems of the {Putnam} {Olympiads}}, journal = {Matemati\v{c}eskoe obrazovanie}, pages = {86--102}, publisher = {mathdoc}, volume = {22}, number = {3}, year = {2002}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MO_2002_22_3_a4/} }
A. Yu. Evnin. Problems of the Putnam Olympiads. Matematičeskoe obrazovanie, Tome 22 (2002) no. 3, pp. 86-102. http://geodesic.mathdoc.fr/item/MO_2002_22_3_a4/