@article{102243, author = {Alois \v Svec}, title = {On certain infinitesimal isometries of surfaces}, journal = {Czechoslovak Mathematical Journal}, volume = {38}, year = {1988}, pages = {473-478}, zbl = {0671.53005}, mrnumber = {950301}, language = {en}, url = {http://dml.mathdoc.fr/item/102243} }
Švec, Alois. On certain infinitesimal isometries of surfaces. Czechoslovak Mathematical Journal, Tome 38 (1988) pp. 473-478. http://gdmltest.u-ga.fr/item/102243/
Deformation of Surfaces Preserving Principal Curvatures, In: Differential Geometry and Complex Analysis, pp. 156-163; Springer-Verlag, Berlin-Heidelberg, 1985. (1985) | MR 0780041 | Zbl 0566.53002