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@article{CMH_1992__67_3_140290, author = {Erwin Lutwak}, title = {On the semicontinuity of curvatures.}, journal = {Commentarii mathematici Helvetici}, pages = {664--669}, publisher = {mathdoc}, volume = {67}, number = {3}, year = {1992}, zbl = {0778.52003}, url = {http://geodesic.mathdoc.fr/item/CMH_1992__67_3_140290/} }
Erwin Lutwak. On the semicontinuity of curvatures.. Commentarii mathematici Helvetici, Tome 67 (1992) no. 3, pp. 664-669. http://geodesic.mathdoc.fr/item/CMH_1992__67_3_140290/