Sturm-lioville theory  Past and present 
ed by Werner O Amrein, Andreas M Hinz and David B Pearson 
 - Basel  Birkhauser  2005 
 - xx, 335p 
<br/><br/><label>ISBN: </label>3764370661 
<br/><br/><label>Dewey Class. No.: </label>515.35  / P05