William, N.R. et al. 2026. Comparative Evaluation Of Zero-Order, First-Derivative, And Second- Uv Spectrophotometric Methods For Quantitative Estimation Of Diclofenac, Ibuprofen, And Atorvastatin. INTERNATIONAL JOURNAL OF ADVANCES IN SIGNAL AND IMAGE SCIENCES. (Feb. 2026), 665–677. DOI:https://doi.org/10.29284/5rm1xe19.