Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1971_198_1_a11, author = {P. S. Soltan and K. F. Prisakaru}, title = {The {Steiner} problem on graphs}, journal = {Doklady Akademii Nauk}, pages = {46--49}, publisher = {mathdoc}, volume = {198}, number = {1}, year = {1971}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1971_198_1_a11/} }
P. S. Soltan; K. F. Prisakaru. The Steiner problem on graphs. Doklady Akademii Nauk, Tome 198 (1971) no. 1, pp. 46-49. http://geodesic.mathdoc.fr/item/DAN_1971_198_1_a11/