@article{1183417272, author = {Eisenhart, L. P.}, title = {Infinitesimal deformation of the skew helicoid}, journal = {Bull. Amer. Math. Soc.}, volume = {9}, number = {3}, year = {1902}, pages = { 148-152}, language = {en}, url = {http://dml.mathdoc.fr/item/1183417272} }
Eisenhart, L. P. Infinitesimal deformation of the skew helicoid. Bull. Amer. Math. Soc., Tome 9 (1902) no. 3, pp. 148-152. http://gdmltest.u-ga.fr/item/1183417272/