@article{GDZPPN002329263, title = {Curvature Increasing Metric Variations.}, journal = {Mathematische Annalen}, volume = {275}, year = {1986}, pages = {633-642}, zbl = {0616.53036}, url = {http://dml.mathdoc.fr/item/GDZPPN002329263} }
Strake, M. Curvature Increasing Metric Variations.. Mathematische Annalen, Tome 275 (1986) pp. 633-642. http://gdmltest.u-ga.fr/item/GDZPPN002329263/