Ben-Sasson, E., A. Chiesa, C. Garman, M. Green, Ian Miers, E. Tromer, M. Virz (2014). Zerocash: Decentralized Anonymous Payments from Bitcoin (extended version), Proceedings of the 2014 IEEE Symposium on Security and Privacy, 56 pp.
I am very sorry, but you clearly do not know what you are talking about.