@article{GDZPPN00242990X, title = {Smoothing Riemannian Metrics.}, journal = {Mathematische Zeitschrift}, volume = {185}, year = {1984}, pages = {69-74}, zbl = {0536.53044}, url = {http://dml.mathdoc.fr/item/GDZPPN00242990X} }
Ruh, Ernst A.; Bemelmans, Josef; Min-Oo. Smoothing Riemannian Metrics.. Mathematische Zeitschrift, Tome 185 (1984) pp. 69-74. http://gdmltest.u-ga.fr/item/GDZPPN00242990X/