Mengistu, M., R. Kufa, and H. Belay. “SHIFT IN PKA OFL-HISTIDINE AND L-GLUTAMIC ACID IN ORGANIC MEDIA: A POTENTIOMETRIC STUDY”. Journal of Advanced Scientific Research, Vol. 10, no. 03 Suppl 1, Sept. 2019, pp. 152-8, https://sciensage.info/index.php/JASR/article/view/359.