%0 Journal Article
%A S. A. Dorichenko
%T An optional course in mathematics as a set of sheets
%J Matematičeskoe obrazovanie
%D 1997
%P 38-75
%N 1
%U http://geodesic.mathdoc.fr/item/MO_1997_1_a3/
%G ru
%F MO_1997_1_a3