Hilbert's fourth problem/
Aleksei Vasilevich Pogorelov; translated by Richard A. Silverman; edited by Irwin Kra, in cooperation with Eugene Zaustinskiy.
- Washington, DC: New York: V.H. Winston, Halsted Press, 1979.
- vi, 97 p.: 23 cm.
- Scripta series in mathematics. .
Translation of Chetvertaia problema Gilberta. Includes index.