Pogorelov, Aleksei Vasil'evich. <br/><br/>
Hilbert's fourth problem   
Ed. by Irwin Kra in cooperation with Eugene Zaustinskiy. 
 - Washington  V.H. Winston  1979 
 - vi, 97p. Index. bibl. 
 - Scripta series in Mathematics .
<br/><br/> "Translated from Russian by Richard A. Silverman"   
<br/><br/><label>Dewey Class. No.: </label>516  / P746.HF