Albeverio/Kurasov <br/><br/>
Singular Perturbations of Differential Operators 

 -  Cambridge University Press  Cambridge University Press  2000 
<br/><br/><label>ISBN: </label>9780511758904 
<br/><br/><label>Source: </label>EBOOK 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics