TY - JOUR AU - V. M. Deundyak AU - B. J. Steinberg TI - Index of convolution operators with slowly varying coefficients on Abelian groups JO - Funkcionalʹnyj analiz i ego priloženiâ PY - 1985 SP - 84 EP - 85 VL - 19 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/FAA_1985_19_4_a13/ LA - ru ID - FAA_1985_19_4_a13 ER -