Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Tsukamoto Osami and Tsuchiya Yasunori and Yamaumra Sakae,Servo-Controlled Power Collector,IEEJ Transactions on Power and Energy,0385-4213,The Institute of Electrical Engineers of Japan,1976,96,6,267-274,https://cir.nii.ac.jp/crid/1390282679577840128,https://doi.org/10.1541/ieejpes1972.96.267