Amer Mathematical Society · Springer
| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Introduction to spectral theory: selfadjoint ordinary differential operators | 978-0-8218-1589-2 (0-8218-1589-X) | 1975 | B. M. Levitan |
| Sturm―Liouville and Dirac Operators | 978-0-7923-0992-5 (0-7923-0992-8) | 1990 | Levitan |