Georgios B. GiannakisVassilis KekatosNikolaos GatsisSeung-Jun Kim 0002Hao Zhu 0001Bruce F. WollenbergMonitoring and Optimization for Power Grids: A Signal Processing Perspective.107-128201330IEEE Signal Process. Mag.5https://doi.org/10.1109/MSP.2013.2245726db/journals/spm/spm30.html#GiannakisKGKZW13