@misc{cryptoeprint:2004:294,
    author = {Souradyuti Paul and Bart Preneel},
    title = {Solving Systems of Differential Equations of Addition},
    howpublished = {Cryptology ePrint Archive, Report 2004/294},
    year = {2004},
    url = {http://eprint.iacr.org/2004/294},
}