@article{TIMM_2011_17_4_a22,
     author = {E. A. Neganova},
     title = {$Aut_0(\Lambda^2)$-symmetrical 4-extensions of the 2-dimensional grid~$\Lambda^2$},
     journal = {Trudy Instituta matematiki i mehaniki},
     pages = {222--243},
     publisher = {mathdoc},
     volume = {17},
     number = {4},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TIMM_2011_17_4_a22/}
}