@article{DAN_1971_200_4_a6, author = {Yu. I. Lyubich}, title = {On the spectrum of a representation of an abelian topological group}, journal = {Doklady Akademii Nauk}, pages = {777--780}, publisher = {mathdoc}, volume = {200}, number = {4}, year = {1971}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1971_200_4_a6/} }