TY  - DATA
AU  - Levitan, Boris Moiseevich.
AU  - Sargsian, I. S.
TI  - Introduction to spectral theory: selfadjoint ordinary differential operators 
T2  - Translations of Mathematical Monographs, 
SN  - 9781470444549 (online)
PY  - 1975///
CY  - Providence
PB  - American Mathematical Society
KW  - Boundary value problems
KW  - Differential operators
KW  - Selfadjoint operators
KW  - Spectral theory (Mathematics)
N1  - Translation of Vvedenie v spektralnuiu teoriiu; Bibliography: p. 518-525
UR  - https://doi.org/10.1090/mmono/039
ER  -