@article{JRAM_1971__250_151145,
     author = {Oldrich Kowalski},
     title = {Curvature of the {Induced} {Riemannian} {Metric} on the {Tangent} {Bundle} of a {Riemannian} {Manifold.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {124--129},
     publisher = {mathdoc},
     volume = {250},
     year = {1971},
     zbl = {0222.53044},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1971__250_151145/}
}