TY - JOUR AU - V. Ya. Sikiryavyiǐ TI - The operator of quasidifferentiation, and related boundary value problems JO - Trudy Moskovskogo matematičeskogo obŝestva PY - 1972 SP - 195 EP - 246 VL - 27 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MMO_1972_27_a5/ LA - ru ID - MMO_1972_27_a5 ER -