Rex , M., Dethloff , K., Handorf , D., Herber , A., Lehmann , R., Neuber , R., Notholt , J., Rinke , A., von der Gathen , P., Weisheimer , A. and Gernandt , H. (2000) “Arctic and Antarctic ozone layer observations: chemical and dynamical aspects of variability and long-term changes in the polar stratosphere”, Polar Research, 19(2), pp. 193-204. doi: 10.3402/polar.v19i2.6545.