Perturbation theory for linear operators | SpringerLink
Perturbation theory for linear operators | SpringerLink,Linear Operators, Part 1: General Theory: Nelson Dunford, Jacob T. Schwartz: 9780471608486: Amazon.com: Books,Amazon.com: Operator Theory by Example (Oxford Graduate Texts in Mathematics): 9780192863874: Garcia, Stephan Ramon, Mashreghi, Javad, Ross, William T.: Books,A Short Introduction to Perturbation Theory for Linear Operators | SpringerLink,The Analysis of Linear Partial Differential Operators I: Distribution Theory and Fourier Analysis (Classics in Mathematics)