A generalization of Bertrand's theorem to surfaces of revolution
Zagryadskii, Oleg A, Kudryavtseva, Elena A, Fedoseev, Denis AVolume:
203
Language:
english
Journal:
Sbornik: Mathematics
DOI:
10.1070/SM2012v203n08ABEH004257
Date:
August, 2012
File:
PDF, 670 KB
english, 2012