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Werho, Trevor; Vittal, Vijay; Kolluri, Sharma; Wong, Sze Mei . (2016). Power System Connectivity Monitoring Using a Graph Theory Network Flow Algorithm. IEEE Transactions on Power Systems, (), 1–8. doi:10.1109/TPWRS.2016.2515368 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research