TY - JOUR AU - L. N. Lyakhov TI - Compactness and pseudocompactness of singular pseudodifferential operators JO - Differencialʹnye uravneniâ PY - 1983 SP - 1025 EP - 1032 VL - 19 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1983_19_6_a12/ LA - ru ID - DE_1983_19_6_a12 ER -