Subardin, M., Susetyo, D., A. Kadir, S., & Suhel, S. (2018). Economies of Scale and Efficiency of the Pulp Industry in Indonesia: Cobb-douglas Cost Function Approach. International Journal of Economics and Financial Issues, 8(4), 284–289. Retrieved from https://econjournals.com.tr/index.php/ijefi/article/view/6724