@inproceedings{polakis:ccs15,<br>
author    = {Iasonas Polakis and<br>
	George Argyros and<br>
	Theofilos Petsios and<br>
	Suphannee Sivakorn and <br>
Angelos D. Keromytis},<br>
title = {Where's Wally?: Precise User Discovery Attacks in Location Proximity Services}, <br>
 booktitle = {Proceedings of the 22Nd ACM SIGSAC Conference on Computer and Communications Security}, <br>
 series = {CCS '15}, <br>
}