Observations of Stratospheric Temperatures, Ozone and Aerosols Above Northern Finland in the Winter 1998/1999 - Kivi, R.; Kyrö, E.; Dörnbrack, A.; Müller, M.; Wille, H.; Stein, B.; Mitev, V.; Matthey, R.; Stefanutti, L.; Del Guasta, M.; Rizi, V. (1999)