%0 Journal Article %A P. N. Bogolyubov %T Causality of the invariant form factors in the decomposition of the current commutators %J Informatics and Automation %D 1975 %P 15-33 %V 136 %I mathdoc %U http://geodesic.mathdoc.fr/item/TRSPY_1975_136_a2/ %G ru %F TRSPY_1975_136_a2