%0 Journal Article
%A A. I. Vol'pert
%A V. A. Vol'pert
%T Construction of the rotation of the vector field for operators
%J Doklady Akademii Nauk
%D 1987
%P 280-283
%V 297
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1987_297_2_a3/
%G ru
%F DAN_1987_297_2_a3