@misc{cryptoeprint:2017:1220,
    author = {Lynn Batten and Xun Yi},
    title = {Off-line Digital Cash Schemes Providing Unlinkability, Anonymity and Change},
    howpublished = {Cryptology ePrint Archive, Report 2017/1220},
    year = {2017},
    url = {https://eprint.iacr.org/2017/1220},
}