S. Silaban, M. Simorangkir, S. Gaffar, I. P. Maksum, and T. Subroto, “Temperature effect on expression of recombinant human prethrombin-2 in Escherichia coli BL21(DE3) ArcticExpress”, J.Pendidik.Kim, vol. 11, no. 3, pp. 122–128, Dec. 2019.