Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MAT_1967_11_2_a3, author = {P. Erd\H{o}s}, title = {Extremal problems in number theory}, journal = {Matematika}, pages = {98--105}, publisher = {mathdoc}, volume = {11}, number = {2}, year = {1967}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MAT_1967_11_2_a3/} }
P. Erdős. Extremal problems in number theory. Matematika, Tome 11 (1967) no. 2, pp. 98-105. http://geodesic.mathdoc.fr/item/MAT_1967_11_2_a3/