1. Safe delivery of optical power from space
2. DOE 1978 "Satellite power system (SPS) concept development and evaluation program (CDEP) Reference System Report", DOE/ER-0023, October 1978
3. Sasaki, S., Naruo, Y. and Nagatomo, M. "Engineering Research for Solar Power Satellite SPS 2000", Proceedings, SPS '97 Conference, Montréal, Canada, August24-28,1997, pp.73-77