@article{10_4064_aa_89_4_331_336,
     author = {L. Gallardo and G. Grekos and J. Pihko},
     title = {On a variant of the {Erd\H{o}s-Ginzburg-Ziv} problem},
     journal = {Acta Arithmetica},
     pages = {331--336},
     publisher = {mathdoc},
     volume = {89},
     number = {4},
     year = {1999},
     doi = {10.4064/aa-89-4-331-336},
     language = {de},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa-89-4-331-336/}
}