@article{05827283, title = {Semigroup properties for the second fundamental form.}, journal = {Documenta Mathematica}, volume = {15}, year = {2010}, pages = {527-543}, zbl = {1208.58031}, language = {en}, url = {http://dml.mathdoc.fr/item/05827283} }
Wang, Feng-Yu. Semigroup properties for the second fundamental form.. Documenta Mathematica, Tome 15 (2010) pp. 527-543. http://gdmltest.u-ga.fr/item/05827283/