International Symposiu, held at the University of Puerto Rico, Mayaguez, Puerto Rico, December 27-30,1965 <br/><br/>
Differential equations and dynamical systems - Proceedings   
ed. by Jack K.Hale, Joseph P.Lasalle 
 - New York  Academic Press  1967 
 - xvii, 544p. 
<br/><br/><label>LCCN: </label>66-30123 
<br/><br/><label>Dewey Class. No.: </label>515.35  / N672