@article{IVM_2024_9_a8,
     author = {F. G. Avkhadiev},
     title = {An analog of the {Poincar\'e} metric and isoperimetric constants},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {92--99},
     year = {2024},
     number = {9},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_2024_9_a8/}
}