@misc{cryptoeprint:2009:181,
    author = {Erik-Oliver Blass and Anil Kurmus and Refik Molva and Thorsten Strufe},
    title = {PSP: Private and Secure Payment with RFID},
    howpublished = {Cryptology ePrint Archive, Report 2009/181},
    year = {2009},
    url = {http://eprint.iacr.org/2009/181},
}