Hossain, M. M., M. A. Islam, S. Begum, and M. Parvin. “Determination of Trace Amount of Iron With As-Triazine Containing Ferroin- Functional Group”. Dhaka University Journal of Science, vol. 67, no. 2, July 2019, pp. 145-50, doi:10.3329/dujs.v67i2.54588.