@article{10_4064_cm98_2_7,
     author = {W. D. Gao and R. Thangadurai},
     title = {On the structure of sequences with
 forbidden zero-sum subsequences},
     journal = {Colloquium Mathematicum},
     pages = {213--222},
     publisher = {mathdoc},
     volume = {98},
     number = {2},
     year = {2003},
     doi = {10.4064/cm98-2-7},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm98-2-7/}
}