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@article{DM_1992_4_2_a6, author = {Yu. L. Pavlov}, title = {Some properties of plane trees with a~hanging root}, journal = {Diskretnaya Matematika}, pages = {61--65}, publisher = {mathdoc}, volume = {4}, number = {2}, year = {1992}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DM_1992_4_2_a6/} }
Yu. L. Pavlov. Some properties of plane trees with a~hanging root. Diskretnaya Matematika, Tome 4 (1992) no. 2, pp. 61-65. http://geodesic.mathdoc.fr/item/DM_1992_4_2_a6/