四元勝一

1. K. Yotsumoto, S. Muroyama and H. Watanabe:
   Design Considerations of a Distributed Power Supply System for
   Telecommunications Network Use Based on Reliability Analyses,
   IEICE Tras., Vol. E73, No. 3, pp. 395-400, Mar. 1990

2. T. Aoki, K. Yotsumoto and S. Muroyama:
   A Control Method for an Uninterruptible Power Supply with
   a Bidirectional Cycloconverter, IEICE Trans.,
   Vol. E75-B, No. 1, pp. 34-41, Jan. 1992.

3. 鍬田豊，四元勝一，大橋靖生：
   直列共振形コンバータ回路を用いた整流器の特性，
   電子情報通信学会論文誌，Vol. J72-B-1, No. 6, pp. 541-549, 1989.6