Cambridge University Press · Elsevier
| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| JWKB Approximation: Contributions to the Theory | 978-0-7204-0085-4 (0-7204-0085-6) | 1965 | Per Olof Froman |
| Physical Problems Solved by the Phase-Integral Method | 978-0-521-67576-5 (0-521-67576-6) | 2005 | " |