Greenblatt, J.B., H. Jost, M. Loewenstein, J.R. Podolske, T.V. Bui, D.F. Hurst, J.W. Elkins, R.L. Herman, C.R. Webster, S.M. Schauffler, E.L. Atlas, P.A. Newman, L.R. Lait, M. Müller, A. Engel, and U. Schmidt (2002), Defining the polar vortex edge from an N2O potential temperature correlation, J. Geophys. Res., 107, 8268, doi:10.1029/2001JD000575.
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