@article{ISU_2011_11_4_a12,
     author = {A. V. Zharkova},
     title = {Inaccesible states in dynamic systems associated with paths and cycles},
     journal = {Izvestiya of Saratov University. Mathematics. Mechanics. Informatics},
     pages = {116--123},
     publisher = {mathdoc},
     volume = {11},
     number = {4},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ISU_2011_11_4_a12/}
}