Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{MASLO_1983__33_1_a4, author = {\v{S}ir\'a\v{n}, Jozef}, title = {An enumeration theorem for rooted graphs}, journal = {Mathematica slovaca}, pages = {29--34}, publisher = {mathdoc}, volume = {33}, number = {1}, year = {1983}, mrnumber = {689274}, zbl = {0509.05052}, language = {en}, url = {http://geodesic.mathdoc.fr/item/MASLO_1983__33_1_a4/} }
Širáň, Jozef. An enumeration theorem for rooted graphs. Mathematica slovaca, Tome 33 (1983) no. 1, pp. 29-34. http://geodesic.mathdoc.fr/item/MASLO_1983__33_1_a4/