TY - JOUR AU - Jirků, Petr TI - Towards an integrated theory of formal and natural languages JO - Kybernetika PY - 1975 SP - EP - 100 VL - 11 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/KYB_1975__11_2_a1/ LA - en ID - KYB_1975__11_2_a1 ER -