%0 Journal Article
%A P. I. Shveikin
%T Normal geometric objects of a~surface in an affine space
%J Itogi Nauki i Tekhniki. Seriya Problemy Geometrii. Trudy Geometricheskogo Seminara
%D 1966
%P 331-423
%V 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/INTG_1966_1_a9/
%G ru
%F INTG_1966_1_a9