@article{TMF_2002_133_2_a2,
     author = {O. Costin and M. Kruskal},
     title = {Movable {Singularities} of {Solutions} of {Difference} {Equations} in {Relation} to {Solvability} and {a~Study} of {a~Superstable} {Fixed} {Point}},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {160--169},
     publisher = {mathdoc},
     volume = {133},
     number = {2},
     year = {2002},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_2002_133_2_a2/}
}