Grisvard, P <br/><br/>
Singularities in boundary value problems 
P. Grisvard 
 - Paris, Berlin  Masson, Springer  1992 
 - xiv  198 
 - Research notes in applied mathematics 22 .
<br/><br/><label>ISBN: </label>9782225857709 
<br/><br/><label>Dewey Class. No.: </label>10.03  / GRIS