Rouche, N. and Mawhin, J. <br/><br/>
Ordinary differential equations; stability and periodic solutions   

 - London  Pitman  1980 
 - viii, 260p. Index, Bibl. 
 - Surveys and reference works in Mathematics   5 .
<br/><br/> "Tr. from the French by R. E. E. Gaines".   
<br/><br/><label>Dewey Class. No.: </label>515.35  / R854.OD