@misc{cryptoeprint:2001:087,
    author = {C. Blundo and S. Mart́n and B. Masucci and C. Padṛ},
    title = {A Linear Algebraic Approach to Metering Schemes},
    howpublished = {Cryptology ePrint Archive, Report 2001/087},
    year = {2001},
    url = {http://eprint.iacr.org/2001/087},
}