@article{TRSPY_2002_238_a5,
     author = {F. J. Castro-Jim\'enez and J. M. Ucha},
     title = {Free {Divisors} and {Duality} for $\mathcal D${-Modules}},
     journal = {Informatics and Automation},
     pages = {97--105},
     publisher = {mathdoc},
     volume = {238},
     year = {2002},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_2002_238_a5/}
}