Zenker, T., Fischer, H., Nikitas, C., Parchatka, U., Harris, G. W., Mihelcic, D., et al. (1998). Intercomparison of NO, NO2, NOy, O3 and ROx measurements during the OCTA (Oxidizing Capacity of the Tropospheric Atmosphere) campaign 1993 at Izana. Journal of Geophysical Research, 103, 13615-13634.