@article{CM_1985__56_2_259_0,
     author = {Van den Essen, Arno},
     title = {The cokernel of the operator $\partial / \partial x_n$ acting on a $\mathcal {D}_n$-module, {II}},
     journal = {Compositio Mathematica},
     pages = {259--269},
     publisher = {Martinus Nijhoff Publishers},
     volume = {56},
     number = {2},
     year = {1985},
     zbl = {0579.58040},
     language = {en},
     url = {http://www.numdam.org/item/CM_1985__56_2_259_0/}
}