%0 Journal Article
%A V. Drozdov
%T What did our grandfathers solved in the old time
%J Matematičeskoe obrazovanie
%D 2014
%P 19-33
%V 71
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MO_2014_71_3_a1/
%G ru
%F MO_2014_71_3_a1