Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1976_231_1_a1, author = {E. G. Belaga}, title = {On {Heawood} vectors of pseudotriangulations}, journal = {Doklady Akademii Nauk}, pages = {14--17}, publisher = {mathdoc}, volume = {231}, number = {1}, year = {1976}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1976_231_1_a1/} }
E. G. Belaga. On Heawood vectors of pseudotriangulations. Doklady Akademii Nauk, Tome 231 (1976) no. 1, pp. 14-17. http://geodesic.mathdoc.fr/item/DAN_1976_231_1_a1/