@misc{cryptoeprint:2013:633,
    author = {J. Boyar and M.G. Find and R. Peralta},
    title = {Four Measures of Nonlinearity},
    howpublished = {Cryptology ePrint Archive, Report 2013/633},
    year = {2013},
    url = {https://eprint.iacr.org/2013/633},
}