by Bohn, G, Taub, J, Linke, A, Bayer, S, Oeser, D, Ziegler, A, Ettl, P, Ackva, A
Published in IOP conference series. Earth and environmental science (01.05.2019)

by Ettl, P, Creath, K
Published in Applied optics (2004) (01.09.1996)

by Ettl, P., Habermeier, H.P., Häusler, G.
Published in Technisches Messen (01.02.2000)