TY - JOUR AU - S. I. Mitrokhin TI - Spectral properties of differential operators with discontinuous coefficients JO - Differencialʹnye uravneniâ PY - 1992 SP - 530 EP - 532 VL - 28 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1992_28_3_a25/ LA - ru ID - DE_1992_28_3_a25 ER -