1. IPCC, “Climate Change 2007- the Physical Science Basis. Working Group I Contribution to the Fourth Assessment Report of the IPCC,” Cambridge University Press, 2007, Cambridge, UK, pp. 1009.
2. R. Vingarzan, “A review of surface ozone background levels and trends,” Atmospheric Environment, vol. 38(21), Jul. 2004, pp. 3431-3442, doi: 10.1016/j.atmosenv.2004.03.030.
3. W. L. Chameides, P.S. Kasibhatla, J. Yienger, H. Levy II, “Growth of continentalscale, metro-agro-plexes, regional ozone pollution, and world food producion,” Science, vol. 264(5155), Apr. 2004, pp. 264,74-77, doi:. 10.1126/science.264.5155.74.
4. A. Marenco, H. Gouget, P. Nedelec, J.P. Pages, F. Karcher, . “Evidence of a long-term increase in tropospheric ozone from Pic du Midi series: consequences: positive radiative forcing,” Journal of Geophysical Research, vol. 99 (D8), Dec. 1994, pp. 16617-16632, doi: 10.1029/94JD00021.
5. The response of natural ecosystems to rising global CO2 levels;Bazzaz;Annual Review of Ecology and Systematics,1990