@article{10_4153_CJM_1974_060_x,
     author = {Rummler, Hansklaus},
     title = {On {Gaussian} and {Geodesic} {Curvature} of {Riemannian} {Manifolds}},
     journal = {Canadian journal of mathematics},
     pages = {629--635},
     year = {1974},
     volume = {26},
     number = {3},
     doi = {10.4153/CJM-1974-060-x},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1974-060-x/}
}