Penfold, Brent (sydney (2) Spina, Julia (university Of Illinois) (2) Anderson, Thomas J. (2) Rosa, Hartmut (friedrich-schiller-universitat Jena (1) Felten, Peter (elon University, Gardner, John N. (university Of South Carolina), Schroeder, Charles C. (university Of Missouri), Lambert, Leo M. (elon University) (1)