Kondo, Y., S. Kawakami, M. Koike, D. Fahey, H. Nakajima, Y. Zhao, N. Toriyama, M. Kanada, G. Sachse, and G. L. Gregory (1997), The performance of an aircraft instrument for the measurement of NOy, J. Geophys. Res., 102, 28663-28671.