@article{UZKU_2009_151_4_a5,
     author = {N. G. Konovenko and V. V. Lychagin},
     title = {On {Metric} {Equivalence} of {Functions} on the {Lobachevski} {Plane}},
     journal = {U\v{c}\"enye zapiski Kazanskogo universiteta. Seri\^a Fiziko-matemati\v{c}eskie nauki},
     pages = {54--59},
     year = {2009},
     volume = {151},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/UZKU_2009_151_4_a5/}
}