Stakgold, Ivar <br/><br/>
Boundary Value Problems of Mathematical Physics (e-book) 

 -  Siam  2000 
 - Classics in Applied Mathematics .
<br/><br/> http://portal.igpublish.com/iglibrary/search/SIAMB0000132.main.html?17 
<br/><br/><label>ISBN: </label>9780898714562 
<br/><br/><label>Subjects--Index Terms: </label>Boundary value problems, Mathematical physics.