Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1975_222_6_a13, author = {R. A. Smolkin}, title = {A graph transformation problem}, journal = {Doklady Akademii Nauk}, pages = {1311--1314}, publisher = {mathdoc}, volume = {222}, number = {6}, year = {1975}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1975_222_6_a13/} }
R. A. Smolkin. A graph transformation problem. Doklady Akademii Nauk, Tome 222 (1975) no. 6, pp. 1311-1314. http://geodesic.mathdoc.fr/item/DAN_1975_222_6_a13/