Calik, P., Bozkurt, B., Zerze, G., Inankur, B., Bayraktar, E., Boy, E., Orman, M., Acik, E. & Ozdamar, T. (2013) Effect of co-substrate sorbitol different feeding strategies on human growth hormone production by recombinant Pichia pastoris. JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY , 88(9), 1631-1640.