@article{GDZPPN002431726, title = {On the Lengths of Closed Geodesics on Almost Round Spheres.}, journal = {Mathematische Zeitschrift}, volume = {192}, year = {1986}, pages = {549-558}, zbl = {0595.53049}, url = {http://dml.mathdoc.fr/item/GDZPPN002431726} }
Bangert, Victor. On the Lengths of Closed Geodesics on Almost Round Spheres.. Mathematische Zeitschrift, Tome 192 (1986) pp. 549-558. http://gdmltest.u-ga.fr/item/GDZPPN002431726/