TY - JOUR AU - Yu. V. Matiyasevich TI - Simple examples of unsolvable canonical calculi JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 1967 SP - 50 EP - 88 VL - 93 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TM_1967_93_a3/ LA - ru ID - TM_1967_93_a3 ER -