TY - JOUR AU - A. K. Arzhnikov AU - S. G. Novokshonov TI - Cluster generalization of~the coherent-potential approximation on~the basis of~the projection formalism in~an~augmented space JO - Teoretičeskaâ i matematičeskaâ fizika PY - 1990 SP - 128 EP - 140 VL - 84 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TMF_1990_84_1_a11/ LA - ru ID - TMF_1990_84_1_a11 ER -