%0 Journal Article
%A A. D. Yashin
%T On the number of new logical constants in intuitionistic propositional calculus
%J Vestnik Moskovskogo universiteta. Matematika, mehanika
%D 1997
%P 7-10
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/VMUMM_1997_1_a1/
%G ru
%F VMUMM_1997_1_a1