1. Abrol, I.P., Bronson, K.F., Duxbury, J.M., Gupta, R.K., 2000. Long-term soil fertility experiments in rice–wheat cropping systems. Rice–Wheat Consortium Paper Series No. 6. Rice–Wheat Consortium for the Indo-Gangetic Plains, New Delhi, 171 pp.
2. Yield and soil nutrient changes in a long-term rice–wheat rotation in India;Bhandari;Soil Sci. Soc. Am. J.,2002
3. Bronson, K.F., Cassman, K.G., Wassman, R., Olk, D.C., van Noordwijk, M., Garrity, D.P., 1997. Soil carbon dynamics in different cropping systems in principal ecoregions of Asia. In: Lal, R., et al. (Eds.), Management of Carbon Sequestration in Soil. CRC Press, Boca Raton, FL, pp. 35–57.
4. BRRI, 1995. Annual Report. Bangladesh Rice Research Institute. Gazipur, Bangladesh.
5. Cassman, K.G., De Datta, S.K., Olk, D.C., Alcantara, J., Samson, M., Descalsota, J.P., Dizon, M., 1995. Yield decline and the nitrogen economy of long-term experiments on continuous, irrigated rice systems in the tropics. In: Lal, R., Stewart, B.A. (Eds.), Soil Management: Experimental Basis for Sustainability and Environmental Quality. CRC Press, Boca Raton, FL, pp. 181–222.