Stephan Olariu Qingwen Xu Mohamed Eltoweissy Ashraf Wadaa Albert Y. Zomaya Protecting the Communication Structure in Sensor Networks. 187-203 2005 1 IJDSN 2 http://dx.doi.org/10.1080/15501320590966440 db/journals/ijdsn/ijdsn1.html#OlariuXEWZ05