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@article{MZ_1982__180_173202, author = {Oldrich Kowalski and Lieven Vanhecke}, title = {Ball-Homogeneous and {Disk-Homogeneous} {Riemannian} {Manifolds.}}, journal = {Mathematische Zeitschrift}, pages = {429--444}, publisher = {mathdoc}, volume = {180}, year = {1982}, zbl = {0476.53023}, url = {http://geodesic.mathdoc.fr/item/MZ_1982__180_173202/} }
Oldrich Kowalski; Lieven Vanhecke. Ball-Homogeneous and Disk-Homogeneous Riemannian Manifolds.. Mathematische Zeitschrift, Tome 180 (1982), pp. 429-444. http://geodesic.mathdoc.fr/item/MZ_1982__180_173202/