TY - DATA AU - Gindikin, S. G. TI - Spectral theory of operators: Fourteenth School on Operators in Functional Spaces, Novgorod State Pedagogical Institute, 1989 T2 - American Mathematical Society Translations: Series 2, SN - 9781470433611 (online) PY - 1992/// CY - Providence, R.I. PB - American Mathematical Society KW - Differential operatorsSpectral theory (Mathematics) N1 - Translated from Russian; Includes bibliographical references; Schr�odinger operator. Estimates for number of bound states as function-theoretical problem;The asymptotic distribution of eigenvalues of differential operators;Estimates of the negative spectrum of an elliptic operator;Selfadjoint extensions and scattering theory for several-body systems UR - http://www.ams.org/trans2/150 ER -