@article{DA_2008_15_4_a7,
     author = {S. B. Gashkov and M. I. Grinchuk and I. S. Sergeev},
     title = {Letter to the {Editor}},
     journal = {Diskretnyj analiz i issledovanie operacij},
     pages = {92--93},
     publisher = {mathdoc},
     volume = {15},
     number = {4},
     year = {2008},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DA_2008_15_4_a7/}
}