Lili Yi Chin-Heng Lim Chong Meng Samson See Sirajudeen Gulam Razul Zhiping Lin Robust tracking in mixed LOS/NLOS environments. 497-500 2010 ICARCV http://dx.doi.org/10.1109/ICARCV.2010.5707811 conf/icarcv/2010 db/conf/icarcv/icarcv2010.html#YiLSRL10