Lestyo Wulandari, Karima Pratiwi and Yuni Retnaningtyas (trans.) (2024) “Determination of Diclofenac Diethylamine Levels in Emulgel Preparations Using NIR Spectroscopy Combined with Chemometrics”, Pakistan Journal of Analytical & Environmental Chemistry, 23(2), pp. 270–276. doi:10.21743/pjaec/2022.12.09.