%0 Journal Article %A Coardoş, Vasile %T Equations associated with a context-free grammar %J Kybernetika %D 1979 %P 253-260 %V 15 %N 4 %U http://geodesic.mathdoc.fr/item/KYB_1979_15_4_a0/ %G en %F KYB_1979_15_4_a0