Perturbation Theory for Linear Operators (Classics in Mathematics, 132): Kato, Tosio: 9783540586616: Amazon.com: Books
,Apple Academic Press,Linear Operators, Part 3 - (Wiley Classics Library) by Nelson Dunford & Jacob T Schwartz (Paperback),Perturbation Theory for Linear Operators (Classics in Mathematics, 132): Kato, Tosio: 9783540586616: Amazon.com: Books,Perturbation Theory for Linear Operators (Classics in Mathematics, 132)