@article{1029003620, author = {Cohn, William S.}, title = {On fractional derivatives and star invariant subspaces.}, journal = {Michigan Math. J.}, volume = {34}, number = {1}, year = {1987}, pages = { 391-406}, language = {en}, url = {http://dml.mathdoc.fr/item/1029003620} }
Cohn, William S. On fractional derivatives and star invariant subspaces.. Michigan Math. J., Tome 34 (1987) no. 1, pp. 391-406. http://gdmltest.u-ga.fr/item/1029003620/