@article{1183523414, author = {Ornstein, Donald}, title = {The differentiability of transition functions}, journal = {Bull. Amer. Math. Soc.}, volume = {66}, number = {6}, year = {1960}, pages = { 36-39}, language = {en}, url = {http://dml.mathdoc.fr/item/1183523414} }
Ornstein, Donald. The differentiability of transition functions. Bull. Amer. Math. Soc., Tome 66 (1960) no. 6, pp. 36-39. http://gdmltest.u-ga.fr/item/1183523414/