@misc{cryptoeprint:2017:203,
    author = {Marshall Ball and Alon Rosen and Manuel Sabin and Prashant Nalini Vasudevan},
    title = {Proofs of Useful Work},
    howpublished = {Cryptology ePrint Archive, Report 2017/203},
    year = {2017},
    url = {https://eprint.iacr.org/2017/203},
}