Mtangi, Wilbert; Auret, Francois Danie; Diale, M. (Mmantsae Moche); Meyer, Walter Ernst; Chwanda, Albert; De Meyer, Hannes; Janse van Rensburg, Pieter Johan; Nel, Jacqueline Margot(American Institute of Physics, 2012-04-16)
Auret, Francois Danie; Goodman, Stewart Alexander; Legodi, Matshisa Johannes; Meyer, Walter Ernst; Look, D.C.(American Institute of Physics, 2002-02-25)