Ben Greenstein Damon McCoy Jeffrey Pang Tadayoshi Kohno Srinivasan Seshan David Wetherall Improving wireless privacy with an identifier-free link layer protocol. 40-53 2008 MobiSys http://doi.acm.org/10.1145/1378600.1378607 conf/mobisys/2008 db/conf/mobisys/mobisys2008.html#GreensteinMPKSW08