Kheirkhah Moghaddam, Jalal, Abolfazl Mahmoodi, Gholamreza Yavari, and Amin Delavar. 2021. “Analysis of the Structure and Savings of the Potato Production Scale Using the Translog Cost Function (Ardabil County)”. International Journal of Agricultural Management and Development 11 (4): 413-28. http://oiccpress.com/ijamad/article/view/6594.