Bhowmik, S., M. Sarkar, and F. Zaman. “Effect of Spacing and Number of Seedlings Per Hill on the Performance of Aus Rice Cv. NERICA 1 under Dry Direct Seeded Rice (DDSR) System of Cultivation”. Journal of the Bangladesh Agricultural University, Vol. 10, no. 2, Apr. 2013, pp. 191-6, doi:10.3329/jbau.v10i2.14681.