@misc{cryptoeprint:2015:495,
    author = {Sondre R{\o}njom},
    title = {Powers of Subfield Polynomials and Algebraic Attacks on Word-Based Stream Ciphers},
    howpublished = {Cryptology ePrint Archive, Report 2015/495},
    year = {2015},
    url = {https://eprint.iacr.org/2015/495},
}