@article{1102970478, author = {Ne\v set\v ril, Jaroslav}, title = {A congruence theorem for asymmetric trees.}, journal = {Pacific J. Math.}, volume = {39}, number = {3}, year = {1971}, pages = { 771-778}, language = {en}, url = {http://dml.mathdoc.fr/item/1102970478} }
Nešetřil, Jaroslav. A congruence theorem for asymmetric trees.. Pacific J. Math., Tome 39 (1971) no. 3, pp. 771-778. http://gdmltest.u-ga.fr/item/1102970478/