%0 Journal Article %A A. V. Voronin %T Discrete vacuum superselection rule in Wightman theory with essentially self-adjoint field operators %J Teoretičeskaâ i matematičeskaâ fizika %D 1986 %P 13-29 %V 66 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/TMF_1986_66_1_a1/ %G ru %F TMF_1986_66_1_a1