Salawitch, R.J., S. Wofsy, E.W. Gottlieb, L.R. Lait, P.A. Newman, M.R. Schoeberl, M. Loewenstein, J.R. Podolske, S. Strahan, . Proffitt, C.R. Webster, R. May, D.W. Fahey, D. Baumgardner, J.E. Dye, J.C. Wilson, K. Kelly, J.W. Elkins, . Chan, and J.G. Anderson (1993), Chemical Loss of Ozone in the Arctic Polar Vortex in the Winter of 1991-1992, Science, 261, 1146-1149.