@article{TIMM_2011_17_4_a6,
     author = {A. A. Gryzlov and E. S. Bastrykov},
     title = {Some centered systems of sets and points defined by them},
     journal = {Trudy Instituta matematiki i mehaniki},
     pages = {76--82},
     publisher = {mathdoc},
     volume = {17},
     number = {4},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TIMM_2011_17_4_a6/}
}