Wilson M. Yeung JunYang Zhou Joseph K. Ng Enhanced Fingerprint-Based Location Estimation System in Wireless LAN Environment. 273-284 2007 conf/euc/2007w EUC Workshops http://dx.doi.org/10.1007/978-3-540-77090-9_25 db/conf/euc/eucw2007.html#YeungZN07