1. Lightning protection for the vertical axis wind turbine. Sandia Laboratories Report SAND77-1241, 1977.
2. Lightning accommodation systems for wind turbine generator safety. NASA Report N81-24539, 1981.
3. Evaluation of lightning accommodation systems for wind driven turbine rotors. NASA Report N82-23679, 1982.
4. Lightning: hazard to wind turbines. NASA Report N83-73594, 1983.
5. How to protect a wind turbine from lightning. NASA Report N84-10661, 1983.