Comparison of ILAS-II and ground-based FTIR measurements of O₃, HNO₃, N₂O, and CH₄ over Kiruna, Sweden - Griesfeller, A.; Griesfeller, J.; Hase, F.; Kramer, I.; Loes, P.; Mikuteit, S.; Raffalski, U.; Blumenstock, T.; Nakajima, H. (Journal of Geophysical Research, 2006)