@article{JRAM_1996__478_153850,
     author = {Luchezar L. Avramov and Adam Borek},
     title = {Factorial extensions of regular local rings and invariants of finite groups.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {177--188},
     publisher = {mathdoc},
     volume = {478},
     year = {1996},
     zbl = {0855.13004},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1996__478_153850/}
}