Gramchev, Todor V <br/><br/>
Partial differential equations  approximate solutions in scales of function spaces 
by Todor V Gramchev and Petar R Popivanov 
 - Berlin  Wiley-VCH  2000 
 - 153p. 
 - Mathematical research  V.108 .
<br/><br/><label>ISBN: </label>3527401385 
<br/><br/><label>Dewey Class. No.: </label>515.353  / P005