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Academic Journal
Authors: Venter, A., Nyamhere, C., Botha, J. R., Auret, F. D., Janse van Rensburg, P. J., Meyer, W. E., Coelho, S. M. M., Kolkovsky, V. l.
Superior Title: Journal of Applied Physics; Jan2012, Vol. 111 Issue 1, p013703, 4p, 1 Chart, 5 Graphs