D. Marghescu, and M. Rajanen. Proceedings of IASTED International Conference on Databases and Applications (DBA 2005), page 181-186. IASTED/ACTA Press, (2005)
T. Pecorella, R. Viti, G. Rigazzi, and C. Carlini. Wireless Communications and Mobile Computing Conference (IWCMC), 2014 International, page 985-989. (August 2014)
W. Jones, A. Phuwanartnurak, R. Gill, and H. Bruce. CHI '05: CHI '05 extended abstracts on Human factors in computing systems, page 1505--1508. New York, NY, USA, ACM Press, (2005)