%0 Journal Article
%A Gruska, Jozef
%T On the size of context-free grammars
%J Kybernetika
%D 1972
%P 213-218
%V 8
%N 3
%U http://geodesic.mathdoc.fr/item/KYB_1972_8_3_a2/
%G en
%F KYB_1972_8_3_a2