Pungho Lee Jinmook Kim Insung Han Hwangbin Ryou Woo Hyun Ahn Secure Cluster Header Election Techniques in Sensor Network. 20-31 2007 conf/ispa/2007w ISPA Workshops http://dx.doi.org/10.1007/978-3-540-74767-3_3 db/conf/ispa/ispa2007w.html#LeeKHRA07