OLANA, BIKILA NAGASA, SHIMELES ADDISU KITTE, and TESFAYE REFERA SORETA. 2015. “Electrochemical Determination of Ascorbic Acid at P-Phenylenediamine film–holes Modified Glassy Carbon Electrodes”. Journal of the Serbian Chemical Society 80 (9). Belgrade, Serbia:1161–1175. https://doi.org/10.2298/JSC141104006O.