@article{DM_1989_1_1_a13,
     author = {V. F. Kolchin},
     title = {Second {All-Union} {Conference}},
     journal = {Diskretnaya Matematika},
     pages = {147--148},
     year = {1989},
     volume = {1},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DM_1989_1_1_a13/}
}