Yeon-Gyun Kim Hahmin Jung Dong Hun Kim User Following of a Mobile Robot by Fusing Different Kinds of Sensors. 295-302 2011 ICHIT (2) http://dx.doi.org/10.1007/978-3-642-24106-2_39 conf/ichit/2011-2 db/conf/ichit/ichit2011-2.html#KimJK11