TY - JOUR AU - D. G. Vasil'ev TI - Asymptotic behavior of the spectrum of pseudodifferential operators with small parameters JO - Sbornik. Mathematics PY - 1984 SP - 61 EP - 72 VL - 49 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/SM_1984_49_1_a4/ LA - en ID - SM_1984_49_1_a4 ER -