%0 Journal Article
%A I. G. Fikhtengol'ts
%T Characteristic vectors and characteristic tensors for spherically
%J Doklady Akademii Nauk
%D 1995
%P 756-759
%V 344
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1995_344_6_a7/
%G ru
%F DAN_1995_344_6_a7