^Holzer, H. and Holldorf, A. (1957). „Isolation of a D-glycerate dehydrogenase, its properties, and its use for the optical determination of hydroxypyruvate in the presence of pyruvate“. Biochem. Z.329: 292-312. PMID13522707.
^Stafford, H.A., Magaldi, A. and Vennesland, B. (1954). „The enzymatic reduction of hydroxypyruvic acid to D-glyceric acid in higher plants“. J. Biol. Chem.207: 621-629. PMID13163046.