Jordan, D. W.  <br/><br/>
Nonlinear ordinary differential equations :  An introduction for scientist and engineers 
/ by D. W. Jordan & P. Smith 
 - 4th ed. 
 - new york  Oxford  2007 
 - 531p. 
<br/><br/><label>Dewey Class. No.: </label>515.352  / JOR/N