TY - JOUR AU - P. G. Naumov TI - Undecidability of the G\"odel--L\"ob logic with quantifiers with respect to propositional variables JO - Vestnik Moskovskogo universiteta. Matematika, mehanika PY - 1993 SP - 13 EP - 16 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/VMUMM_1993_2_a2/ LA - ru ID - VMUMM_1993_2_a2 ER -