PASAM JYOTHIRMAYI, DEVALARAO G, and MANDAVA VENKATA BASAVESWARA RAO. 2019. “FORMULATION AND EVALUATION OF MODIFIED ORAL CHRONOTROPIC DRUG DELIVERY SYSTEMS OF TRAMADOL HYDROCHLORIDE FOR RHEUMATOID ARTHRITIS PAIN”. Asian Journal of Pharmaceutical and Clinical Research 12 (7):120-26. https://doi.org/10.22159/ajpcr.2019.v12i7.32992.