Cryptology ePrint Archive: BibTeX Citation of Report 2011/552

@misc{cryptoeprint:2011:552,
    author = {Stefan Katzenbeisser, Ünal Kocabas, Vincent van der Leest, Ahmad-Reza Sadeghi, Geert-Jan Schrijen, Heike Schröder, Christian Wachsmann},
    title = {Recyclable PUFs: Logically Reconfigurable PUFs},
    howpublished = {Cryptology ePrint Archive, Report 2011/552},
    year = {2011},
    note = {\url{http://eprint.iacr.org/}},
}

You will need the url.sty package (comes with most LaTeX installations) for the last line. Otherwise, remove the \url command.