1. General Atomics, 3550 General Atomics Court, San Diego, California 92121-1122, USA
2. Palomar Scientific Instruments, San Marcos, California 92069, USA
3. Princeton Plasma Physics Laboratory, P.O. Box 451, Princeton, New Jersey 08543-0451, USA
4. University of California, Los Angeles, 475 Portola Plaza, Los Angeles, California 90095-1547, USA
5. Virginia Commonwealth University, 907 Floyd Ave., Richmond, Virginia 23284, USA
6. CompX, P.O. Box 2672, Del Mar, California 92014-5672, USA