O'Malley, Robert E. Jr <br/><br/>
Singular perturbation methods for ordinary differential equations 

 - New York  Springer-Verlag  1991 
 - viii,225p, 22cm 
 - Applied mathematical sciences V.89 .
<br/><br/><label>ISBN: </label>038797556X 
<br/><br/><label>Dewey Class. No.: </label>515.352,  / D, rob