@misc{cryptoeprint:2007:114,
    author = {Guang Zeng and Wenbao Han and Kaicheng He},
    title = {High Efficiency Feedback Shift Register: $\sigma-$LFSR},
    howpublished = {Cryptology ePrint Archive, Report 2007/114},
    year = {2007},
    url = {http://eprint.iacr.org/2007/114},
}