APA (7th ed.) Citation

Fröman, N., & Fröman, P. O. JWKB approximation: Contributions to the theory.

Chicago Style (17th ed.) Citation

Fröman, Nanny, and Per Olof Fröman. JWKB Approximation: Contributions to the Theory.

MLA (9th ed.) Citation

Fröman, Nanny, and Per Olof Fröman. JWKB Approximation: Contributions to the Theory.

Warning: These citations may not always be 100% accurate.