@misc{cryptoeprint:2005:004,
    author = {Jacques Patarin and Audrey Montreuil},
    title = {Benes and Butterfly schemes revisited},
    howpublished = {Cryptology ePrint Archive, Report 2005/004},
    year = {2005},
    url = {http://eprint.iacr.org/2005/004},
}