@article{TIMM_2010_16_1_a21,
     author = {V. N. Ushakov},
     title = {APST'2009},
     journal = {Trudy Instituta matematiki i mehaniki},
     pages = {281--284},
     publisher = {mathdoc},
     volume = {16},
     number = {1},
     year = {2010},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TIMM_2010_16_1_a21/}
}