@inproceedings{Pervasive_Otsason_2005,
author={V. Otsason and Alexander Varshavsky and A. LaMarca and E. de Lara},
title="Accurate GSM indoor localisation",
booktitle={Proceedings of the 7th ACM International Conference on Ubiquitous Computing (Ubicomp 2005)},
year={2005}
}