说明：  此文件包含了GEORGIOS SMARAGDAKIS IBRAHIM MATTA AZER BESTAVROS等人的论文“A Stable Election Protocol for clustered heterogeneous wireless sensor networks ” 以及实现代码。
(This document contains the paper "A Stable Election Protocol for Clustered Heterogeneous Wireless Sensor Networks" by GEORGIOS SMARAGDAKIS IBRAHIM MATTA AZER BESTAVROS et al and the implementation code)