Jeeyeon Kim Seungjoo Kim Kilsoo Chun Jaeil Lee Dongho Won Group Key Agreement Protocol Among Mobile Devices in Different Cells. 1090-1097 2006 conf/ispa/2006w ISPA Workshops http://dx.doi.org/10.1007/11942634_112 db/conf/ispa/ispa2006w.html#KimKCLW06