@ARTICLE{Li:PMC2015, author = {Mario \v{C}agalja, Toni Perkovi\'{c}, Marin Bugari\'{c} and Shujun Li}, title = {Fortune cookies and smartphones: Weakly unrelayable channels to counter relay attacks}, journal = {Pervasive and Mobile Computing}, year = {2015}, volume = {20}, pages = {64-81}, doi = {10.1016/j.pmcj.2014.09.002}, }