@article{IVM_2009_10_a1,
     author = {V. I. Grunskaya},
     title = {Distinguishability of $s$-labyrinths},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {14--22},
     publisher = {mathdoc},
     number = {10},
     year = {2009},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_2009_10_a1/}
}