Verhulst, Ferdinard. <br/><br/>
Non-linear differential equations and dynamical systems. 
Ferdinard Verhulst. 
 - New York:  Springer- Verlag;  1989. 
 - ix, 277p. 
<br/><br/><label>Subjects--Index Terms: </label>Non-linear differential equations. 
<br/><br/><label>Universal Decimal Class. No.: </label>517.928.4  / VER