Lestyo Wulandari, Karima Pratiwi, and Yuni Retnaningtyas, trans. “Determination of Diclofenac Diethylamine Levels in Emulgel Preparations Using NIR Spectroscopy Combined With Chemometrics”. Pakistan Journal of Analytical & Environmental Chemistry 23, no. 2 (November 1, 2024): 270–276. Accessed November 20, 2025. https://pjaec.pk/index.php/pjaec/article/view/38.