TY - JOUR AU - G. I. Èskin TI - Boundary value problems and the parametrix for elliptic systems of pseudodifferential equations JO - Trudy Moskovskogo matematičeskogo obŝestva PY - 1973 SP - 75 EP - 116 VL - 28 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MMO_1973_28_a3/ LA - ru ID - MMO_1973_28_a3 ER -