Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{JRAM_1975__0278_0279_151661, author = {Frank Harary and Robert W. Robinson}, title = {The number of archiral trees.}, journal = {Journal f\"ur die reine und angewandte Mathematik}, pages = {322--335}, publisher = {mathdoc}, volume = {0278_0279}, year = {1975}, zbl = {0311.05102}, url = {http://geodesic.mathdoc.fr/item/JRAM_1975__0278_0279_151661/} }
Frank Harary; Robert W. Robinson. The number of archiral trees.. Journal für die reine und angewandte Mathematik, 0278_0279 (1975), pp. 322-335. http://geodesic.mathdoc.fr/item/JRAM_1975__0278_0279_151661/