@article{IVM_1962_6_a10,
     author = {S. L. Pevzner},
     title = {A detailed classification of second-order irreducible curves in the {Lobatchevsky} plane by means of the focal-director invariants},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {85--90},
     publisher = {mathdoc},
     number = {6},
     year = {1962},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1962_6_a10/}
}