Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DE_1982_18_5_a11, author = {N. N. Petrov}, title = {Some extremal search problems on graphs}, journal = {Differencialʹnye uravneni\^a}, pages = {821--827}, publisher = {mathdoc}, volume = {18}, number = {5}, year = {1982}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1982_18_5_a11/} }
N. N. Petrov. Some extremal search problems on graphs. Differencialʹnye uravneniâ, Tome 18 (1982) no. 5, pp. 821-827. http://geodesic.mathdoc.fr/item/DE_1982_18_5_a11/