@article{1077229134, author = {Dwork, Bernard M.}, title = {On the size of differential modules}, journal = {Duke Math. J.}, volume = {100}, number = {1}, year = {1999}, pages = { 225-239}, language = {en}, url = {http://dml.mathdoc.fr/item/1077229134} }
Dwork, Bernard M. On the size of differential modules. Duke Math. J., Tome 100 (1999) no. 1, pp. 225-239. http://gdmltest.u-ga.fr/item/1077229134/