%0 Journal Article
%A Al. A. Privalov
%T On some properties and criterions of a parallelogram, finished
%J Matematičeskoe obrazovanie
%D 2020
%P 35-41
%N 2
%U http://geodesic.mathdoc.fr/item/MO_2020_2_a4/
%G ru
%F MO_2020_2_a4