@article{VTAMU_2018_23_124_a8,
     author = {V. F. Molchanov and E. E. Kryukova},
     title = {Placements without neighbours},
     journal = {Vestnik rossijskih universitetov. Matematika},
     pages = {655--665},
     year = {2018},
     volume = {23},
     number = {124},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VTAMU_2018_23_124_a8/}
}