Pilyugin, Sergei Yu. <br/><br/>
Introduction to structurally stable system of differential equations   
by Sergei Yu. Pilyugin 
 - Basel  Birkhauser Verlag  1992 
 - ix, 188p. 
<br/><br/><label>ISBN: </label>3764325747 
<br/><br/><label>Dewey Class. No.: </label>515.35  / N921