Didar-ul-Alam, M. “The Effect of Amount on Release of NH<sub>4</sub> and NO<sub>3</Sub>-N in the Soil at Two Harvests of Nitrogen through Five BGA Species and N-Fertilizers in Rice Growing Plant”. Bangladesh Journal of Scientific and Industrial Research, vol. 43, no. 3, Sept. 2008, pp. 427-32, doi:10.3329/bjsir.v43i3.1160.