Elizabethtown College, 867 Baugher Ave., Elizabethtown, PA 17022, USA
Institute for Research in Electronics and Applied Physics, University of Maryland, Energy Research Facility (Bldg. #223) Paint Branch Drive, University of Maryland, College Park, MD 20742-3511, USA
Institute for Research in Electronics and Applied Physics, University of Maryland, Energy Research Facility (Bldg. #223) Paint Branch Drive, University of Maryland, College Park, MD 20742-3511, USA
Icarus Research Inc., P. O. Box 30780, Bethesda, MD 20824-0780, USA