@misc{cryptoeprint:2016:239,
    author = {Wouter Castryck and Ilia Iliashenko and Frederik Vercauteren},
    title = {Provably Weak Instances of Ring-LWE Revisited},
    howpublished = {Cryptology ePrint Archive, Report 2016/239},
    year = {2016},
    url = {https://eprint.iacr.org/2016/239},
}