@article{FPM_2005_11_4_a2,
     author = {A. Yu. Volovikov},
     title = {The genus of $G$-spaces and topological lower bounds for chromatic numbers of hypergraphs},
     journal = {Fundamentalʹna\^a i prikladna\^a matematika},
     pages = {33--48},
     publisher = {mathdoc},
     volume = {11},
     number = {4},
     year = {2005},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FPM_2005_11_4_a2/}
}