Hurst, D.F., G.S. Dutton, P. Romashkin, J.W. Elkins, R.L. Herman, E.J. Moyer, D.C. Scott, R. May, C.R. Webster, J. Grecu, M. Lowenstein, and J.R. Podolske (2000), Comparison of in situ N2O and CH4 measurements in the upper troposphere and lower stratosphere during STRAT and POLARIS, J. Geophys. Res., 105, 19811-19822.