Feasibility study of superconducting cable application to oil/gas power supply network. - Junichi Arai; Kohei Higashikawa; Tadashi Koshizuka; Hisatoshi Ikeda; Noureddine Harid; Ahmed Al-Durra (IAS, 2017)

A Unified Directional Protection Element for Converter-Based Islanded Hybrid Microgrid. - Ahmed Saber; Maher A. Azzouz; Kohei Higashikawa; Ahmed Abu-Siada; S. M. Muyeen (IEEE Trans. Smart Grid, 2025)