@article{ADM_2013_16_1_a3,
     author = {P. Brumatti and M. Veloso},
     title = {On locally nilpotent derivations of {Fermat} rings},
     journal = {Algebra and discrete mathematics},
     pages = {20--32},
     publisher = {mathdoc},
     volume = {16},
     number = {1},
     year = {2013},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ADM_2013_16_1_a3/}
}