@article{IIGUM_2013_6_4_a2,
     author = {M. D. Katashevtsev and V. I. Martyanov},
     title = {Combinatorial problems of high complexity and analyse of sketch images},
     journal = {The Bulletin of Irkutsk State University. Series Mathematics},
     pages = {31--47},
     publisher = {mathdoc},
     volume = {6},
     number = {4},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IIGUM_2013_6_4_a2/}
}