@misc{cryptoeprint:2018:800,
    author = {Puwen Wei and Quan Yuan and Yuliang Zheng},
    title = {Security of the Blockchain against Long Delay Attack},
    howpublished = {Cryptology ePrint Archive, Report 2018/800},
    year = {2018},
    url = {https://eprint.iacr.org/2018/800},
}