Linchun Li Jianhua Li Ling Tie Jun Pan ACKDs: An Authenticated Combinatorial Key Distribution Scheme for Wireless Sensor Networks. 262-267 2007 SNPD (2) http://doi.ieeecomputersociety.org/10.1109/SNPD.2007.119 conf/snpd/2007 db/conf/snpd/snpd2007-2.html#LiLTP07