TY - JOUR AU - A. J. Kfoury AU - A. P. Stolboushkin AU - P. Urzyczyn TI - Some open questions in the~theory of program schemes and dynamic logics JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 1989 SP - 43 EP - 68 VL - 44 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/RM_1989_44_1_a2/ LA - en ID - RM_1989_44_1_a2 ER -