Krasnosel'skii, M. A. and Others <br/><br/>
Nonlinear almost periodic oscillations   
By M. A. Krasnosel'skii, V. Sh. Burd and Yu. S. Kolesov 
 - New York  John Wiley  1973 
 - x, 326p. 
<br/><br/> "Tr. by A. Libin".   
<br/><br/><label>Dewey Class. No.: </label>515.35  / K89.NA