@article{DAN_1994_336_2_a2,
     author = {A. F. Gorshkov and Yu. M. Solomentsev},
     title = {Applicability of vertex replacements in a class of problems on},
     journal = {Doklady Akademii Nauk},
     pages = {157--160},
     publisher = {mathdoc},
     volume = {336},
     number = {2},
     year = {1994},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1994_336_2_a2/}
}