Razzaque, M., M. M. Haque, and A. Hamid. “Elevated CO₂ and Nitrogen Interaction in Photosynthesis and Productivity of Modern and Local Rice (<i>Oryza sativa</I> L.) Cultivars”. The Agriculturists, vol. 7, no. 1, July 2010, pp. 105-12, doi:10.3329/agric.v7i1.5588.