@article{VMUMM_2003_1_a6,
     author = {A. V. Petrikov},
     title = {Approaching orbits of points on the {Lobachevski\u{i}} plane under the action of integer-valued matrices},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {26--30},
     publisher = {mathdoc},
     number = {1},
     year = {2003},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_2003_1_a6/}
}