@article{IVM_2020_4_a7,
     author = {F. G. Avkhadiev},
     title = {Properties and applications of the distance functions on open sets},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {87--92},
     year = {2020},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_2020_4_a7/}
}