Konferenzbeitrag
Wendt, J.; Fabian, P.; Flentje, G.; Kourtidis, K.: Investigation of catalytic reduction and filter techniques for simultaneous measurements of NO, NO
2 and HNO
3 in the stratosphere. In: Ozone in the Troposphere and Stratosphere, Part 2, S. 870 - 873 (Hg. Hudson, R. D.). GSFC, Greenbelt (1994)