Wenliang Du Jing Deng Yunghsiang S. Han Pramod K. Varshney A pairwise key pre-distribution scheme for wireless sensor networks. 42-51 2003 conf/ccs/2003 ACM Conference on Computer and Communications Security http://doi.acm.org/10.1145/948109.948118 db/conf/ccs/ccs2003.html#DuDHV03