L. Milligen-Boersma

On the molecular basis of pyruvate kinase deficiency II. Role of thiol groups in pyruvate kinase from pyruvate kinase-deficient patients

G. Staal, J. Koster, T. Berkel, 1974 .

Human erythrocyte pyruvate kinase. Its purification and some properties.

C. Veeger, G. Staal, J. Koster, 1971, Biochimica et biophysica acta.