M. A. K. Khalil and M. J. Shearer, “Decreasing Emissions of Methane from Rice Agriculture,” International Congress Series, Vol. 1293, 2006, 1993, pp. 33-41.
 A. K. Rath, S. R. Mohanty, S. Mishra, S. Kumaraswamy, B. Ramakrishnan and N. Sethunathan, “Methane Production in Unamended and Rice-Straw-Amended Soil at Different Moisture Levels,” Biology and Fertility of Soils, Vol. 28, 1999, pp. 145-149.
 CMDL, “Climate Monitoring and Diagnostic Laboratory (CMDL) of the National Oceanographic and Atmospheric Administration,” Boulder, CO, USA, N2O Data from:
 R. A. Rasmussen and M. A. K. Khalil, “Atmospheric Trace Gases: Trends and Distribution over the Last Decade,” Science, Vol. 32, 1986, pp. 1623-1624.
 M. Battle, M. Bender, T. Sowers, P. P. Tans, J. H. Butler, J. W. Elkins, J. T. Ellis, T. Conway, N. Zhang, P. Lang and A. D. Clarke, “Atmospheric Gas Concentrations over the Past Century Measured in Air from Firn at the South Pole,” Nature, Vol. 383, 1996, pp. 231-235.
 R. T. Watson, M. C. Zinyowera, R. H. Moss and D. J. Dokken, “Climate Change 1 Impacts, Adaptations and Mitigation of Climate Change: Scientific-Technical Analyses,” In: Intergovernmental Panel on Climate Change, Cambridge University Press, Cambridge, 1996.
 Y. Takai, “The Mechanism of Methane Formation in Flooded Paddy Soil,” Soil Science and Plant Nutrition, Vol. 16, 1970, pp. 238-244.
 M. X. Wang, J. Li and X. H. Zheng, “Methane Emission and Mechanisms of Methane Production, Oxidation, Transportation in the Rice Fields,” Scientia Atmospheric Sinica, Vol. 22, 1998, pp. 600-612.
 S. Mishra, A. K. Rath, T. K. Adhya and V. R. Rao, “Effect of Continuous and Alternate Water Regimes on Methane Efflux from Rice under Greenhouse Conditions,” Biology and Fertility of Soils, Vol. 24, 1997, pp. 399-405.
 I. Watanabe, T. Hashimoto and A. Shimoyama, “Methaneoxidizing Activities and Methanotrophic Populations Associated with Wetland Rice Plants,” Biology and Fertility of Soils, Vol. 24, 1997, pp. 261-265.
 M. A. K. Khalil, “Atmospheric Methane: Its Role in the Global Environment,” Springer-Verlag, Berlin 2000.
 A. Mosier and C. Kroeze, “Potential Impact on the Global Atmospheric N2O Budget of the Increased Nitrogen Input Required to Meet Future Global Food Demands,” Chemosphere—Global Change Science, Vol. 2, No. 3-4, July 2000, pp. 465-474.
 G. Malla, A. Bhatia, H. Pathak, S. Prasad, N. Jain and J. Singh, “Mitigating Nitrous Oxide and Methane Emissions from Soil in Rice-Wheat System of the Indo-Gangetic Plain with Nitrification and Urease Inhibitors,” Chemosphere, Vol. 58, No. 2, 2005, pp. 141-147.
 S. J. D. Grosso, W. J. Parton, A. R. Mosier, M. K. Walsh, D. S. Ojima and P. E. Thornton, “DAYCENT National- scale Simulations of Nitrous Oxide Emissions from Cropped Soils in the United States,” Journal of Environmental Quality, Vol. 35, No. 4, 2006, pp. 1451-1460.
 J. S. Singh and S. Singh, “Methanogenic Bacteria, Me- thanogenesis and Methane Emission from Rice Paddies,” Journal of Tropical Ecology, 1995, Vol. 36, pp. 145-165.
 Y. Huang, H. Wang, H. Huang, Z. W. Feng, Z. H. Yang and Y. C. Luo, “Characteristics of Methane Emission from Wetland Rice-Duck Complex Ecosystem,” Agriculture, Ecosystems & Environment, Vol. 105, No. 1-2, 2005, pp. 181-193. doi:10.1016/j.agee.2004.04.004
 R. L. Sass, F. M. Fisher, S. T. Lewis, M. F. Jund and F. T. Turner, “Methane Emission from Rice Fields: Effects of Soil Properties,” Global Biogeochemical Cycles, Vol. 8, No. 2, 1994, pp. 135-140. doi:10.1029/94GB00588
 W. Reiner and S. A. Milkha, “The Role of Rice Plants in Regulating Mechanisms of Methane Missions,” Biology and Fertility of Soils, Vol. 31, No. 1, 2000, pp. 20-29.
 Y. H. Zheng, G. B. Deng and G. M. Lu, “Eco-Economic Benefits of Rice-Fish-Duck Complex Ecosystem,” Journal of Applied Ecology, Vol. 8, 1997, pp. 431-434.
 Y. Wang, “Studies on Ecological Benefits of Planting and Breeding Model in Rice Fields,” Acta Ecologica Sinica, Vol. 20, 2000, pp. 311-316.
 Y. Wang and Y. Wang, “Quick Measurement of CH4, CO2 and N2O Emission from a Short-Plant Ecosystem,” Advances in Atmospheric Sciences, Vol. 20, No. 5, 2003, pp. 842-844. doi:10.1007/BF02915410
 S. Kumaraswamy, A. K. Rath, B. Ramakrishnan and N. Sethunathan, “Wetland Rice Soils as Sources and Sinks of Methane: A Review and Prospects for Research,” Biology and Fertility of Soils, Vol. 31, No. 6, 2000, pp. 449-461. doi:10.1007/s003740000214
 D.E. Rolston, “Gas flux,” In: A. Klute, Ed., Methods of Soil Analysis, Second Edition, In: Agronomy Monograph, No. 9, ASA and SSSA, Madison, Wisconsin, 1986, pp. 1103-1119.
 R. Z. Khan, C. Miiller and S. G. Sommer, “Micrometeorological Mass Balance Technique for Measuring CH4 Emission from Stored Cattle Slurry,” Biology and Fertility of Soils, Vol. 24, 1997, pp. 442-444.
 S. Kumaraswamy, A. K. Rath, K. Bharati, B. Ramakrishnan and N. Sethunathan, “Influence of Pesticide on Methane Oxidation in a Flooded Tropical Rice Soil,” Bulletin of Environmental Contamination and Toxicology, Vol. 59, 1997, pp. 222-227. doi:10.1007/s001289900468
 S. S. Yang and E.H. Chang, “Effect of Fertilizer Application on Methane Emission/Production in the Paddy Soils of Taiwan,” Biology and Fertility of Soils, Vol. 25, 1997, pp. 245-251. doi:10.1007/s003740050310
 S. N. Satpathy, A. K. Rath, S. Mishra, S. Kumaraswamy, B. Ramakrishnan, T. K. Adhya and N. Sethunathan, “Effect of Hexachlorocyclohexane on Methane Production and Emission from Flooded Rice Soils,” Chemosphere, Vol. 34, No. 2, 1997, pp. 2663-2671.
 T. K. Adhya, A. K. Rath, P. K. Gupta, P. R. Rao, S. N. Das, K. M. Parida, D. C. Parasher and N. Sethunathan, “Methane Emission from Flooded Rice Fields under Irrigated Conditions,” Biology and Fertility of Soils, Vol. 18, 1994, pp. 245-248. doi:10.1007/BF00647675
 H. Schutz, W. Seiler and R. Conrad, “Influence of Soil Temperature on Methane Emission from Rice Paddy Fields,” Biogeochemistry, Vol. 11, 1990, pp. 77-95.
 IPCC (Intergovernmental Panel on Climate Change), “Good Practice Guidance and Uncertainty Management in National Greenhouse Gas Inventories,” IGES, Tokyo, 2000.