Friedland, S <br/><br/>
Univalence conditions and Sturm-Liouville eigenvalues 
S. Friedland; Z. Nehari 
 - Carnegie-Mellon  University Carnegie-Mellon  1968 
 - 13 p  27 cm 
 - Report  69-22 .
<br/><br/> Lucrarea este multigrafiata