1. Ways to Spaceflight;Oberth,1929
2. Solar Electric Generating System Resource Requirements And The Feasibility Of Orbiting Solar Reflectors;Enger,1977
3. Space light: space industrial enhancement of the solar option;Ehricke;Acta Astronaut.,1979
4. Illumination from space with orbiting solar-reflector spacecraft;Canady,1982
5. Mirrors in space for low-cost terrestrial solar electric power at night;Fraas,2012