Feshchenko, S.F.  Shkil, N.I. <br/><br/>
Asymptotic methods in the theory of linear differential equations  x 

 - x 
 - N.Y.  Elsevier  1967 
 - xvi, 270 
<br/><br/>x 
<br/><br/><label>ISBN: </label>x 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Calculus Calculus 
<br/><br/><label>Dewey Class. No.: </label>517.37/FEA