Saaty, Thomas L. <br/><br/>
Modern nonlinear equations 

 - New York :   Dover,   1981. 
 - 471 p. 
<br/><br/><label>ISBN: </label>0486642321 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ECUACIONES DIFERENCIALES NO LINEALES
<br/><br/><label>Universal Decimal Class. No.: </label>517.957