%0 Journal Article
%A S. V. Zharov
%A L. B. Medvedeva
%T Second order surfaces as local of points in space
%J Matematičeskoe obrazovanie
%D 2021
%P 49-56
%V 100
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MO_2021_100_4_a7/
%G ru
%F MO_2021_100_4_a7