Basher, M. A., R. Banoo, and S. Haque. “Estimation of Manganese, Zinc and Copper in Multimineral Preparation Containing Vitamins: A Complexometric Approach”. Stamford Journal of Pharmaceutical Sciences, vol. 2, no. 2, Aug. 2010, pp. 16-20, doi:10.3329/sjps.v2i2.5820.