Conceptual Study of A Solar Power Satellite, SPS 2000 By Makoto Nagatomo, Susumu Sasaki and Yoshihiro Naruo — Proceedings of the 19th International Symposium on Space Technology and Science, Yokohama, JAPAN, May 1994, pp. 469–476 Paper No.
Truy cập ngày 7 tháng 8 năm 2008.  ^ Conceptual Study of A Solar Power Satellite, SPS 2000 By Makoto Nagatomo, Susumu Sasaki and Yoshihiro Naruo — Proceedings of the 19th International Symposium on Space Technology and Science, Yokohama, JAPAN, May 1994, pp. 469–476 Paper No.