@misc{cryptoeprint:2020:1576,
    author = {Changhui Hu and Jin Li and Zheli Liu and Xiaojie Guo and Yu Wei and Xuan Guang and Grigorios Loukides and Changyu Dong},
    title = {How to Make Private Distributed Cardinality Estimation Practical, and Get Differential Privacy for Free},
    howpublished = {Cryptology ePrint Archive, Report 2020/1576},
    year = {2020},
    url = {https://eprint.iacr.org/2020/1576},
}