TY - JOUR AU - M. A. Shubin TI - The spectral theory and the index of elliptic operators with almost periodic coefficients JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 1979 SP - 109 EP - 157 VL - 34 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/RM_1979_34_2_a2/ LA - en ID - RM_1979_34_2_a2 ER -