Arctic and Antarctic ozone layer observations - chemical and dynamical aspects of variability and long-term changes in the polar stratosphere. - Rex,M..; Dethloff,K..; Handorf,D..; Herber,A..; Lehmann,R..; Neuber,R..; Notholt,J..; Rinke,A..; von der Gathen,P..; Weisheimer,A..; Gernandt,H.. (Polar Research, 2000)