@article{SEMR_2020_17_a54,
     author = {V. M. Nezhinskij},
     title = {Isotopy invariants of spatial graphs},
     journal = {Sibirskie \`elektronnye matemati\v{c}eskie izvesti\^a},
     pages = {769--776},
     publisher = {mathdoc},
     volume = {17},
     year = {2020},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/SEMR_2020_17_a54/}
}