Tao Shu Haythem Bany Salameh Marwan Krunz Cross-layer Optimization of a CSMA Protocol with Adaptive Modulation for Improved Energy Efficiency in Wireless Sensor Networks. 2006 conf/globecom/2006 GLOBECOM https://doi.org/10.1109/GLOCOM.2006.956 db/conf/globecom/globecom2006.html#ShuSK06