Gel'fand, I. M. <br/><br/>
Theory of differential equations 
I. M. Gel'fand, 
 - New York  Academic Press  1967 
 - x,222p.  : ill.  ; 23cm. 
<br/><br/>Bibliography: p.217-219<br/>Includes index 
<br/><br/><label>ISBN: </label>0-12-279503-2 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential equations
<br/><br/><label>LC Class. No.: </label>MATH QA331.G373