Shanmugam1, Saranya, et al. “Development and Characterization of Poly-E-Caprolactone Based Microspheres-A Sustained Drug Delivery System for Treating Rheumatoid Arthritis”. Asian Journal of Chemistry, vol. 25, no. 20, May 2013, pp. 333-6, https://asianpubs.org/index.php/ajchem/article/view/25_Supplementary%20Issue_92.