@article{GDZPPN002097117, title = {Geodesics and Totally Convex Sets on Surfaces.}, journal = {Inventiones mathematicae}, volume = {64}, year = {1981}, pages = {507-518}, zbl = {0443.53034}, url = {http://dml.mathdoc.fr/item/GDZPPN002097117} }
Bangert, Victor. Geodesics and Totally Convex Sets on Surfaces.. Inventiones mathematicae, Tome 64 (1981) pp. 507-518. http://gdmltest.u-ga.fr/item/GDZPPN002097117/