Eastham, M. S. P. <br/><br/>
Asymptotic solution of linear differential systems; applications of the levinson theorem  / 

 - Oxford:  Clarendon Press,  1989 
 - x, 240p. Index, Bibl. 
 - London Mathematical Society monographs, new series ; 4 .
<br/><br/><label>Dewey Class. No.: </label>515.35  / Ea13.AS