Maheshwari, R.K., and Anshuman Dubey. “Quantitative Estimation of Naproxen in Bulk Sample and Tablet Formulation Using Niacinamide As Hydrotropic Solubilizing Agent”. Asian Journal of Chemistry, vol. 20, no. 6, Mar. 2010, pp. 4225-8, https://asianpubs.org/index.php/ajchem/article/view/19010.