%0 Journal Article %A A. V. Berezin %A A. A. Bogush %A V. S. Otchik %A F. I. Fedorov %T Matrix elements of the principal series of unitary representations of the de Sitter group in the %J Doklady Akademii Nauk %D 1980 %P 857-859 %V 253 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1980_253_4_a20/ %G ru %F DAN_1980_253_4_a20