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APA Citation
Li, Q., Yang, H., Han, Y., Li, M., & Chen, W. (2016). a state machine strategy based on droop control for an energy management system of PEMFC-battery-supercapacitor hybrid tramway. International journal of hydrogen energy, 41, 16148–16159. http://access.bl.uk/ark:/81055/vdc_100035861017.0x00003a