(1) Japan Society for the Promotion of Science Research for the Future Program: Highly Efficient Use of Energy and Reduction of its Environmental Impact (2002-1)
(2) Japan Society for the Promotion of Science Research for the Future Program: 2nd International Symposium Report of on Synthesis of Ecological High Quality Transportation Fuel (2002-1)
(3) J. Sveca and L. Söder: “Wind Power Integration in Power Systems with Bottleneck Problems”, 2003 IEEE Bologna Power Tech., IEEE Catalog 0-7803-7967-5/03/, Italy (2003-10)
(4) O. Sakamoto and T. Nitta: “Basic Consideration on effects of Superconducting Generator on Mitigation of Voltage fluctuation in power Systems with Wind power generation”, 2005 National Convention Record IEE Japan, No. 6-081 (2005-3) (in Japanese)