@article{rifa_product_2010-1,
	title = {Product {Perfect} {Z2Z4}-linear codes in {Steganography}},
	volume = {abs/1003.4852},
	url = {http://arxiv.org/abs/1003.4852},
	journal = {CoRR},
	author = {Rifà, Josep and Ronquillo, Lorena},
	year = {2010},
	note = {\_eprint: 1003.4852}
}