P. Nguyen, T. Nguyen, and H. Van, “Cloning, periplasmic expression and purification of hGM-CSF (Human Granulocyte - Macrophage ColonyStimulating Factor) in Escherichia coli”, VNUHCM Journal of Science and Technology Development, vol. 17, no. 4, pp. 12-19, Dec. 2014.