Adversary Immune Size Approximation of Single-Hop Radio Networks Jedrzej Kabarowski, Miroslaw Kutylowski, Wojciech Rutkowski We design a time and energy efficient algorithm concerning size approximation for single-hop radio networks. The most important feature of the algorithm is that it is immune against an adversary that may scramble a certain number of communication steps. The previous algorithms presented in the literature provide false estimations if an adversary causes certain communication collisions. TAMC'2006, LNCS