Nahar, N., A. Sultana, M. S. Saon, and M. Shoeb. “Evaluation of Vitamin B1, B2 and B6 Tablets in Bangladesh by UV-Vis Spectrophotometer”. Indian Journal of Pharmaceutical and Biological Research, Vol. 4, no. 04, Dec. 2016, pp. 32-38, doi:10.30750/ijpbr.4.4.8.