Troshynski, E., C. Lee, and P. Dourish,
"Accountabilities of Presence: Reframing Location-Based Systems",
ACM Conf. on Human Factors in Computing Systems (CHI 2008), Florence, Italy, pp. 487-496, April 5-10, 2008.
Tsudik, G., M. Burmester, A. Juels, A. Kobsa, D. Molnar, R. Di Pietro, and M. Rieback,
"RFID Security and Privacy: Long-term Research or Short-term Tinkering? Invited Paper",
First ACM Conference on Wireless Network Security (WiSec '08), Alexandria, VA, pp. 160, March 31-April 2, 2008.