@article{GDZPPN002099209, title = {On the Lengths of Closed Geodesics on Convex Surfaces.}, journal = {Inventiones mathematicae}, volume = {74}, year = {1983}, pages = {593-598}, zbl = {0505.53020}, url = {http://dml.mathdoc.fr/item/GDZPPN002099209} }
Ballmann, Werner. On the Lengths of Closed Geodesics on Convex Surfaces.. Inventiones mathematicae, Tome 74 (1983) pp. 593-598. http://gdmltest.u-ga.fr/item/GDZPPN002099209/