%0 Journal Article %A Assi, A. %A Castro-Jiménez, F. J. %A Granger, J. M. %T How to calculate the slopes of a $D$-module %J Compositio Mathematica %D 1996 %P 107-123 %V 104 %N 2 %I Kluwer Academic Publishers %G en %F CM_1996__104_2_107_0