Alemayehu, T., and A. Sergawie. “Determination of Chloramphenicol in Pharmaceutical Samples at Electrochemically Pretreated Glassy Carbon Electrode”. American Scientific Research Journal for Engineering, Technology, and Sciences, vol. 6, no. 1, Aug. 2013, pp. 1-11, https://asrjetsjournal.org/index.php/American_Scientific_Journal/article/view/489.