@article{FPM_2005_11_2_a7,
     author = {O. V. Kulikova},
     title = {On relatively aspherical presentations and their central extensions},
     journal = {Fundamentalʹna\^a i prikladna\^a matematika},
     pages = {115--125},
     publisher = {mathdoc},
     volume = {11},
     number = {2},
     year = {2005},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FPM_2005_11_2_a7/}
}