Karunanidhi, Santhana Lakshmi, et al. “Stability Indicating HPTLC Method for Quantitative Estimation of Manidipine Sihydrochloride API”. European Journal of Chemistry, vol. 2, no. 1, Mar. 2011, pp. 113-6, doi:10.5155/eurjchem.2.1.113-116.87.