1. J. Lelieveld, P. J. Crutzen, and F. J. Dentener, “Changing Concentration, Lifetime and Climate Forcing of Atmospheric Methane,” Tellus 50B(2), 128–150 (1998).
2. N. M. Bazhin, “Metan v atmosfere,” Sorosovskii Obrazovatel’nyi Zhurnal 6(3), 52–57 (2000).
3. E. J. Dlugokencky, Methane. http://www.esrl.noaa.gov/research/themes/forcing/Methane.pdf .
4. Greenhouse Effect, Climate Changes, and Ecosystems (Gidrometeoizdat, Leningrad, 1989) [in Russian].
5. Review of Environmental Pollution in the Russian Federation in 2006 (Gidrometeoizdat, St. Petersburg, 2007) [in Russian].