%0 Journal Article %A V. V. Lokhin %T Symmetry and nonlinear tensor functions in a Minkowski space %J Doklady Akademii Nauk %D 1969 %P 513-515 %V 186 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1969_186_3_a5/ %G ru %F DAN_1969_186_3_a5