@article{VMUMM_2021_4_a1,
     author = {V. M. Chikin},
     title = {Functions preserving metrics and {Gromov{\textendash}Hausdorff} space},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {11--16},
     year = {2021},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_2021_4_a1/}
}