Trefethen, Llyod N <br/><br/>
Spectra and pseudospectra: the behaviour of nonnormal matrices and operators 

 - New Jersey  Princeton university press  2005 
 - xvii+606 
<br/><br/><label>ISBN: </label>9780691119465 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Eigenvalues<br/>Spectrum analysis<br/>Differential operators