@article{IVM_2006_2_a1,
     author = {F. N. Garif'yanov},
     title = {On three difference equations in a plane with a $T$-shaped cut},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {11--14},
     publisher = {mathdoc},
     number = {2},
     year = {2006},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_2006_2_a1/}
}