@article{MZ_1976__147_172317,
     author = {Paul E. Ehrlich},
     title = {Zwei {Bemerkungen} \"uber die {Ricci-Kr\"ummung.}},
     journal = {Mathematische Zeitschrift},
     pages = {29--34},
     publisher = {mathdoc},
     volume = {147},
     year = {1976},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/MZ_1976__147_172317/}
}