Klingenberg, Wilhelm. "3.9 The Geodesic Flow on Manifolds of Negative Curvature". Riemannian Geometry, Berlin, New York: De Gruyter, 1995, pp. 363-380. https://doi.org/10.1515/9783110905120.363
Klingenberg, W. (1995). 3.9 The Geodesic Flow on Manifolds of Negative Curvature. In Riemannian Geometry (pp. 363-380). Berlin, New York: De Gruyter. https://doi.org/10.1515/9783110905120.363
Klingenberg, W. 1995. 3.9 The Geodesic Flow on Manifolds of Negative Curvature. Riemannian Geometry. Berlin, New York: De Gruyter, pp. 363-380. https://doi.org/10.1515/9783110905120.363
Klingenberg, Wilhelm. "3.9 The Geodesic Flow on Manifolds of Negative Curvature" In Riemannian Geometry, 363-380. Berlin, New York: De Gruyter, 1995. https://doi.org/10.1515/9783110905120.363
Klingenberg W. 3.9 The Geodesic Flow on Manifolds of Negative Curvature. In: Riemannian Geometry. Berlin, New York: De Gruyter; 1995. p.363-380. https://doi.org/10.1515/9783110905120.363