@article{MMO_1957_6_a0,
     author = {M. F. Bokshtein},
     title = {Homological invariants of topological {spaces.~II}},
     journal = {Trudy Moskovskogo matemati\v{c}eskogo ob\^{s}estva},
     pages = {3--133},
     publisher = {mathdoc},
     volume = {6},
     year = {1957},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MMO_1957_6_a0/}
}