A. S. Voulodimos, C. Z. P. M. N. M. and. “A Framework for Preserving User Privacy and Ensuring QoS in Location Based Services Using Non-Irreversible Algorithm”. International Journal of Communication Networks and Information Security (IJCNIS), vol. 1, no. 1, Apr. 2009, doi:10.17762/ijcnis.v1i1.5.