%0 Journal Article %A V. M. Nikolaenko %T On scale-invariant equations of gravitational field in the theory with quadratic Lagrangians %J Doklady Akademii Nauk %D 1974 %P 1068-1070 %V 218 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1974_218_5_a18/ %G ru %F DAN_1974_218_5_a18