1. Methane flux from wetlands areas
2. Gammon, R., Wofsy, S. C., Cicerone, R. J., Delany, A. C., Harriss, R. T., Khalil, M. A. K., Logan, J. A., Midgeley, P. and Prather, M. J. 1985. Tropospheric trace gases. In: Atmospheric Ozone: 1985 (World Meteorological Organization—GORAM project: report No. 16, Geneva), pp. 57–116.
3. Global trends of measured surface air temperature
4. Sources of Atmospheric nitrous oxide from combustion