Singh, H.B., D. Herlth, D. O’Hara, L. Salas, A.L. Torres, G.L. Gregory, G.W. Sachse, and J.F. Kasting (1990), Atmospheric PAN Measurements over the Brazilian Amazon Basin during the West Season: Relationships with Nitrogen Oxides and Ozone, J. Geophys. Res., 95, 16,945-16.
