Author Affiliations +
DAVID M. ROHR,1 MICHAEL F. FIX,2 GUY DARROUGH3
1Department of Earth and Physical Sciences, Sul Ross State University, Alpine, Texas 79832, < > drohr@sulross.edu
2Department of Physics, University of Missouri—St. Louis, 8001 Natural Bridge Road, St. Louis, Missouri 63121, < > phymfix@admiral.umsl.edu
32075 Rosedale Court, Arnold, Missouri 63010