%0 Journal Article
%A Z. A. Steingrad
%T Harmonic systems of reference and Zelmanov's monadic formalism
%J Doklady Akademii Nauk
%D 1974
%P 1296-1299
%V 217
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1974_217_6_a16/
%G ru
%F DAN_1974_217_6_a16