Lakshmikantham. <br/><br/>
An introduction to nonlinear boundary value problems.  Volume  109 / 
Lakshmikantham, Stephen R. Bernfeld. 
 - [S.l.] :  Academic Press,  1974. 
 - 386 p. 
 - Mathematics in science and engineering. .
 - Mathematics in science and engineering. .
<br/><br/><label>ISBN: </label>0120931508 9780120931507 
<br/><br/><label>Dewey Class. No.: </label>515.35