EPJ Web of Conferences 229 , 03006 ( 2020 ). Surface and thickness measurement in the Targetlab of GSI Birgit Kindler, Elif Celik Ayik, Annett Hübner, Bettina Lommel, Jutta Steiner, and Vera Yakusheva; [...] Nucl. Instr. and Meth. A 334 , 69-79 ( 1993 ). Targets and degraders for relativistic heavy ions at GSI H. Folger, H. Geißel, W. Hartmann, J. Klemm, G. Münzenberg, D. Schardt, K.-H. Schmidt and W.Thalheimer; [...] Vol. NS-30 , No.2 1569-1572 ( 1983 ). If you have any further questions or remarks, please send an e-mail to B.Kindler .