Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{MASLO_1962__12_2_a0, author = {Bos\'ak, Juraj}, title = {O istej triede orientovan\'ych grafov}, journal = {Mathematica slovaca}, pages = {81--84}, publisher = {mathdoc}, volume = {12}, number = {2}, year = {1962}, mrnumber = {0158394}, zbl = {0129.16002}, language = {sl}, url = {http://geodesic.mathdoc.fr/item/MASLO_1962__12_2_a0/} }
Bosák, Juraj. O istej triede orientovaných grafov. Mathematica slovaca, Tome 12 (1962) no. 2, pp. 81-84. http://geodesic.mathdoc.fr/item/MASLO_1962__12_2_a0/