@article{MS2_1989__65_2_167062,
     author = {M. Auslander and I. Reiten and S.O. Smalo},
     title = {Galois actions on rings and finite {Galois} coverings.},
     journal = {Mathematica Scandinavica},
     pages = {5--32},
     publisher = {mathdoc},
     volume = {65},
     number = {2},
     year = {1989},
     zbl = {0677.16024},
     url = {http://geodesic.mathdoc.fr/item/MS2_1989__65_2_167062/}
}