Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{MASLO_1982__32_1_a3, author = {Zelinka, Bohdan}, title = {On double covers of graphs}, journal = {Mathematica slovaca}, pages = {49--54}, publisher = {mathdoc}, volume = {32}, number = {1}, year = {1982}, mrnumber = {648219}, zbl = {0483.05057}, language = {en}, url = {http://geodesic.mathdoc.fr/item/MASLO_1982__32_1_a3/} }
Zelinka, Bohdan. On double covers of graphs. Mathematica slovaca, Tome 32 (1982) no. 1, pp. 49-54. http://geodesic.mathdoc.fr/item/MASLO_1982__32_1_a3/