@article{IVM_1976_7_a6,
     author = {Ya. P. Lumel'skii and L. M. Tsirul'nikova},
     title = {Probabilistic proof of combinatorial identities},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {52--55},
     year = {1976},
     number = {7},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1976_7_a6/}
}