@misc{cryptoeprint:2016:1155,
    author = {Mathias Wagner and Yongbo Hu and Chen Zhang and Yeyang Zheng},
    title = {Comparative Study of Various Approximations to the Covariance Matrix in Template Attacks},
    howpublished = {Cryptology ePrint Archive, Report 2016/1155},
    year = {2016},
    url = {https://eprint.iacr.org/2016/1155},
}