%0 Journal Article
%A T. N. Bryantseva
%A V. A. Delyanov
%T Differentiation of functions at the secondary school
%J Matematičeskoe obrazovanie
%D 2017
%P 7-12
%N 3
%U http://geodesic.mathdoc.fr/item/MO_2017_3_a1/
%G ru
%F MO_2017_3_a1