@article{rifa_perfect_2010, title = {Perfect {Z2Z4}-linear codes in {Steganography}}, volume = {abs/1002.0026}, url = {http://arxiv.org/abs/1002.0026}, journal = {CoRR}, author = {Rifà, Helena and Rifà, Josep and Ronquillo, Lorena}, year = {2010}, note = {\_eprint: 1002.0026} }