@article{SM_2002_193_11_a2,
     author = {O. V. Mel'nikov},
     title = {Aspherical pro-$p$-groups},
     journal = {Sbornik. Mathematics},
     pages = {1639--1670},
     publisher = {mathdoc},
     volume = {193},
     number = {11},
     year = {2002},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2002_193_11_a2/}
}