@article{FAA_2015_49_3_a8, author = {\`E. V. Kissin and V. S. Shulman}, title = {Representations of {Nilpotent} {Groups:} {Extensions,} {Neutral} {Cohomology,} and {Pontryagin} {Spaces}}, journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a}, pages = {79--83}, publisher = {mathdoc}, volume = {49}, number = {3}, year = {2015}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/FAA_2015_49_3_a8/} }