Sturm-Liouville Theory  Past and Present 
Werner O.Amrein, Andreas M.Hinz, David B.Pearson 
 - Basel , Boston, Berlin  Birkhauser  2005 
 - xx,335p  24 cm 
<br/><br/> Contine bibliografie si index 
<br/><br/><label>ISBN: </label>103764370661 
<br/><br/><label>ISSN: </label>139783764370664