@article{SEMR_2021_18_2_a34,
     author = {V. M. Nezhinskij},
     title = {Spatial graphs and their isotopy classification},
     journal = {Sibirskie \`elektronnye matemati\v{c}eskie izvesti\^a},
     pages = {1390--1396},
     publisher = {mathdoc},
     volume = {18},
     number = {2},
     year = {2021},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SEMR_2021_18_2_a34/}
}