Leonid Bolotnyy Gabriel Robins Randomized Pseudo-random Function Tree Walking Algorithm for Secure Radio-Frequency Identification. 43-48 2005 conf/autoid/2005 AutoID http://doi.ieeecomputersociety.org/10.1109/AUTOID.2005.41 db/conf/autoid/autoid2005.html#BolotnyyR05