Lawrence Mzukisi Madikizela, and Luke Chimuka. “Simultaneous Determination of Naproxen, Ibuprofen and Diclofenac in Wastewater Using Solid-Phase Extraction With High Performance Liquid Chromatography”. Water SA 43, no. 2 April (April 20, 2017). Accessed April 3, 2025. https://watersa.net/article/view/10640.