[1]
K. Abbasi, M. Khuhawar, K. Mahar, A. Mallah, and A. Nawaz Siyal, “Gas Chromatographic Determination of α-Keto Acids in Pharmaceutical Preparation Using 1,2-Propylenediamine as Derivatizing Reagent”, ajc, vol. 25, no. 3, pp. 1211–1215, Oct. 2012.