APA (7th ed.) Citation

Katō, T. (1966). Perturbation theory for linear operators. Springer-Verlag.

Chicago Style (17th ed.) Citation

Katō, Tosio. Perturbation Theory for Linear Operators. Berlin, New York: Springer-Verlag, 1966.

MLA (9th ed.) Citation

Katō, Tosio. Perturbation Theory for Linear Operators. Springer-Verlag, 1966.