Levitan B. M. and Zhikov, V. V. <br/><br/>
Almost periodic functions and differential equations   

 - Cambridge  Cambridge University Press  1982 
 - x, 211p. Index, Bibl. 
<br/><br/> "Tr. from the Russian by L. W. Longdon".   
<br/><br/><label>Dewey Class. No.: </label>515.24  / L666.AP