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

 - New York  Springer  1991 
 - viii, 225p. : ill.   
 - Applied mathematical sciences ; vol. 89 .
<br/><br/> Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>038797556X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential equations -- Ordinary<br/>Perturbation