by Barnes, N.P., Thomas, M.E., Koch, G.J., Marsh, W.B.
Published in IEEE journal of quantum electronics (01.05.1995)

by Jirong Yu, Songsheng Chen, Walsh, B.M., Koch, G.J., Yingxin Bai, Singh, U.N., Barnes, N.P.
Published in Conference on Lasers and Electro-Optics, 2003. CLEO '03 (2003)

by Ashparie, Y.M., Bashorun, O.P., Koch, G.J., Siegel, G.R., Stoyanov, P.T.
Published in 2005 IEEE Design Symposium, Systems and Information Engineering (2005)

by Muller, G.J., Koch, H.M. , Kriegler, A.B., van der Walt, B.J. and van Jaarsveld, P.P.
Published in South African journal of science (01.01.1989)

by Koch, G.J., Kruuv, J., Bruckschwaiger, C.W.
Published in Experimental cell research (01.12.1970)