%0 Journal Article %A M. A. Naimark %T Analog of Stone's theorem for a space with an indefinite metric %J Doklady Akademii Nauk %D 1966 %P 1259-1261 %V 170 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1966_170_6_a5/ %G ru %F DAN_1966_170_6_a5