@article{JRAM_1990__410_153259,
     author = {Ernst Kunz and Reinhold H\"ubl},
     title = {Regular differential forms and duality for projective morphisms.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {84--108},
     publisher = {mathdoc},
     volume = {410},
     year = {1990},
     zbl = {0709.14014},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1990__410_153259/}
}