Muller-Pfeiffer, Erich. <br/><br/>
Spectral theory of ordinary differential operations   
by Erich Muller-Pfeiffer, tr. ed. by M.S.P. Easthan 
 - Chichester  Ellis Horwood Limited  1981 
 - 246p. 
 - Ellis Horwood Series in Mathematics and its Applications .
<br/><br/><label>ISBN: </label>0853121893 
<br/><br/><label>Dewey Class. No.: </label>515.724  / N811;1