%0 journal article %@ 0094-8276 %A Reichardt, J., Ansmann, A., Serwazi, M., Weitkamp, C., Michaelis, W. %D 1996 %J Geophysical Research Letters %N 15 %P 1929-1932 %T Unexpectedly low ozone concentration in midlatitude tropospheric ice clouds: A case study %U 15 %X