%0 Journal Article %A M. A. Naimark %T Decomposition of a tensor product of irreducible representations of the proper Lorentz group into irreducible representations. I.~The case of a tensor product of representations of the fundamental series %J Trudy Moskovskogo matematičeskogo obŝestva %D 1959 %P 121-153 %V 8 %I mathdoc %U http://geodesic.mathdoc.fr/item/MMO_1959_8_a4/ %G ru %F MMO_1959_8_a4