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@article{MZ_1978__159_172659, author = {Gudlaugur Thorbergsson}, title = {Clodes {Geodesics} on {Non-Compact} {Riemannian} {Manifolds.}}, journal = {Mathematische Zeitschrift}, pages = {249--258}, publisher = {mathdoc}, volume = {159}, year = {1978}, zbl = {0358.53027}, url = {http://geodesic.mathdoc.fr/item/MZ_1978__159_172659/} }
Gudlaugur Thorbergsson. Clodes Geodesics on Non-Compact Riemannian Manifolds.. Mathematische Zeitschrift, Tome 159 (1978), pp. 249-258. http://geodesic.mathdoc.fr/item/MZ_1978__159_172659/