TY - THES A1 - Steiner, Ingo T1 - Development of a high-resolution spectrograph and observations of CH+ absorption lines in the interstellar medium Y1 - 2008 DO - 10.23689/fidgeo-38 PB - Univ. Bochum UR - http://hdl.handle.net/11858/00-1735-0000-0001-30A9-A ER -