Magnus Wilhelm <br/><br/>
Hill's equation 

 -  1966 
 - p.  cm. 
 - Interscience Tracts in Pure and Applied Mathematics; Number 20 .
<br/><br/><label>Standard No.: </label>22291 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>B33:1:2, K6