@article{VVGUM_2021_24_4_a2,
     author = {A. Yu. Igumnov},
     title = {On the preserving of the orientation of triangle by quasi-isometric mapping},
     journal = {Matemati\v{c}eska\^a fizika i kompʹ\^uternoe modelirovanie},
     pages = {34--52},
     publisher = {mathdoc},
     volume = {24},
     number = {4},
     year = {2021},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VVGUM_2021_24_4_a2/}
}