Emmanuel Pollakis Renato L. G. Cavalcante Slawomir Stanczak Base station selection for energy efficient network operation with the majorization-minimization algorithm. 219-223 2012 SPAWC https://doi.org/10.1109/SPAWC.2012.6292896 conf/spawc/2012 db/conf/spawc/spawc2012.html#PollakisCS12