@article{TIMM_2010_16_1_a18,
     author = {Yu. A. Shashkin},
     title = {On one combinatorial lemma},
     journal = {Trudy Instituta matematiki i mehaniki},
     pages = {244--254},
     publisher = {mathdoc},
     volume = {16},
     number = {1},
     year = {2010},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TIMM_2010_16_1_a18/}
}