@article{DAN_1972_203_5_a7,
     author = {A. Ya. Helemskii},
     title = {A locally compact group algebra having trivial two-dimensional {Banach} cohomology groups is compact},
     journal = {Doklady Akademii Nauk},
     pages = {1004--1007},
     publisher = {mathdoc},
     volume = {203},
     number = {5},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1972_203_5_a7/}
}