TY - JOUR AU - Sh. A. Alimov AU - V. A. Il'in TI - Conditions for the convergence of spectral decompositions that correspond to self-adjoint extensions of elliptic operators. II. Self-adjoint extension of the Laplace operator with an arbitrary spectrum JO - Differencialʹnye uravneniâ PY - 1971 SP - 851 EP - 882 VL - 7 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1971_7_5_a8/ LA - ru ID - DE_1971_7_5_a8 ER -