@article{AA_2019_31_6_a4,
     author = {V. M. Nezhinskij},
     title = {Spatial graphs, tangles and plane trees},
     journal = {Algebra i analiz},
     pages = {197--207},
     publisher = {mathdoc},
     volume = {31},
     number = {6},
     year = {2019},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AA_2019_31_6_a4/}
}