@article{MZM_1977_21_1_a7,
     author = {V. A. Voblyi},
     title = {Asymptotic formulas for the enumerator of trees with a~given number of hanging or internal vertices},
     journal = {Matemati\v{c}eskie zametki},
     pages = {65--70},
     publisher = {mathdoc},
     volume = {21},
     number = {1},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1977_21_1_a7/}
}