TY - JOUR AU - G. E. Mints TI - Solvability of the problem of deducibility in LJ for a class of formulas which do not contain negative occurrences of quantors JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 1968 SP - 121 EP - 130 VL - 98 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TM_1968_98_a5/ LA - ru ID - TM_1968_98_a5 ER -