@article{GDZPPN00046189X, title = {Riemannian Tori Without Conjugate Points are Flat.}, journal = {Geometric and functional analysis}, volume = {4}, year = {1994}, pages = {259-269}, zbl = {0808.53038}, url = {http://dml.mathdoc.fr/item/GDZPPN00046189X} }
Burago, D.; Teneblat, K. Riemannian Tori Without Conjugate Points are Flat.. Geometric and functional analysis, Tome 4 (1994) pp. 259-269. http://gdmltest.u-ga.fr/item/GDZPPN00046189X/