Syubbanul Wathon, Sri Budiarti, Popi Hadi Wisnuwardhani, Neng Herawati, Adi Santoso, and Ratih Asmana Ningrum. 2015. “Stability of Recombinant Human Interferon Alpha-2b Produced In Methylotropic Yeast Pichia Pastoris ”. International Journal of Research in Pharmaceutical Sciences 6 (4), 312-20. https://pharmascope.org/ijrps/article/view/1252.