@article{ADM_2013_15_2_a5,
     author = {H. Godinho and A. Lemos and D. Marques},
     title = {Weighted zero-sum problems over $C_3^r$},
     journal = {Algebra and discrete mathematics},
     pages = {201--212},
     publisher = {mathdoc},
     volume = {15},
     number = {2},
     year = {2013},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ADM_2013_15_2_a5/}
}