Abdalkarim Awad Thorsten Frunzke Falko Dressler Adaptive Distance Estimation and Localization in WSN using RSSI Measures. 471-478 2007 DSD http://dx.doi.org/10.1109/DSD.2007.4341511 conf/dsd/2007 db/conf/dsd/dsd2007.html#AwadFD07