Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Iioka Daisuke,Technical Issues of Voltage Regulation in Distribution System with Large Reverse Power Flow from Photovoltaic Systems and its Solutions,IEEJ Transactions on Power and Energy,03854213,The Institute of Electrical Engineers of Japan,2020-06-01,140,6,441-444,https://cir.nii.ac.jp/crid/1390003825184579968,https://doi.org/10.1541/ieejpes.140.441