by Cilliers, J.E., Herselman, P.L.
Published in South African journal of science (01.07.2006)

by Herselman, P.L., de Wind, H.J.
Published in 2008 International Conference on Radar (01.09.2008)

by Herselman, P.L, Baker, C.J
Published in IET International Conference on Radar Systems 2007 (2007)

by Herselman, P.L., Cloete, J.H., Mason, I.M.
Published in Proceedings of the Tenth International Conference on Grounds Penetrating Radar, 2004. GPR 2004 (2004)