@article{MZM_1996_59_4_a5,
     author = {R. I. Grigorchuk},
     title = {Bounded cohomology of group constructions},
     journal = {Matemati\v{c}eskie zametki},
     pages = {546--550},
     publisher = {mathdoc},
     volume = {59},
     number = {4},
     year = {1996},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1996_59_4_a5/}
}