@misc{cryptoeprint:2006:077,
    author = {Jaume Marti-Farre and Carles Padro},
    title = {On Secret Sharing Schemes, Matroids and Polymatroids},
    howpublished = {Cryptology ePrint Archive, Report 2006/077},
    year = {2006},
    url = {http://eprint.iacr.org/2006/077},
}