@article{INTO_2020_181_a8,
     author = {M. S. Maskina and T. A. Zhilnikov},
     title = {Particular cases of first-kind quasi-parallelograms of the {Lobachevsky} plane},
     journal = {Itogi nauki i tehniki. Sovremenna\^a matematika i e\"e prilo\v{z}eni\^a. Temati\v{c}eskie obzory},
     pages = {66--73},
     publisher = {mathdoc},
     volume = {181},
     year = {2020},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/INTO_2020_181_a8/}
}