Kawa, S. R., D. Fahey, L. E. Heidt, W. H. Pollock, S. Solomon, D. Anderson, M. Loewenstein, M. H. Proffitt, J. Margitan, and R. Chan (1992), Photochemical partitioning of the reactive nitrogen and chlorine reservoirs in the high altitude stratosphere, J. Geophys. Res., 97, 7905-7923.