@article{VTAMU_2018_23_123_a17,
     author = {N. M. Mishachev and A. M. Shmyrin},
     title = {Neighborhood metasystems on digraphs},
     journal = {Vestnik rossijskih universitetov. Matematika},
     pages = {479--487},
     publisher = {mathdoc},
     volume = {23},
     number = {123},
     year = {2018},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VTAMU_2018_23_123_a17/}
}