Golchert, SHW, N Buschmann, A Kleindienst, M Palm, N Schneider, H Jonch-Sorensen, and J Notholt (2005), Starting long-term stratospheric observations with RAMAS at summit, Greenland, IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING, 43(5), 1022-1027, 8th Specialist Meeting on Microwave Radiometry and Remote Sensing Applications, Univ Rome La Sapienza, Engn Coll, Rome, ITALY, FEB 24-27, 2004, doi:10.1109/TGRS.2004.840660.