@misc{cryptoeprint:2007:230,
    author = {Gautham Sekar and Souradyuti Paul and Bart Preneel},
    title = {New Weaknesses in the Keystream Generation Algorithms of the Stream Ciphers TPy and Py},
    howpublished = {Cryptology ePrint Archive, Report 2007/230},
    year = {2007},
    url = {http://eprint.iacr.org/2007/230},
}