Niazi, Ali, Torkman, Mahtab D., Khorshidi, Neda. “Spectrophotometric Determination of Mefenamic Acid in Biological Samples Using Magnetic Iron Oxide Nanoparticles as a Sorbent for Solid Phase Extraction.” Journal of Nanoanalysis, vol. 2, no. 2, 2015, pp. 46-56. 10.22034/jna.2015.02.002