TY - JOUR AU - A. S. Demidov TI - Boundary effects and the asymptotic nature of the degeneration of certain elliptic pseudodifferential operators JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 1972 VL - 27 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/RM_1972_27_1_a16/ LA - ru ID - RM_1972_27_1_a16 ER -