Razzaque, M., Haque, M., Khaliq, Q. and Solaiman, A. (2009) “The Effect of Different Nitrogen Levels and Enrichment CO<sub>2</sub> on the Nutrient Contents of Rice Cultivars”, Bangladesh Journal of Scientific and Industrial Research, 44(2), pp. 241–246. doi: 10.3329/bjsir.v44i2.3680.