List of Articles Cobb-Douglas Function Open Access Article Abstract Page Full-Text 1 - Analyze the Factors Affecting Labor Productivity in Producing Grapes (Case Study: Grape Growers Doshman Zeyari Region of Mamasani Township, Fars Province, Iran) Mostafa Teimoori Seyed Rooholah Mousavi Open Access Article Abstract Page Full-Text 2 - Estimating Production Function under Endogeneity: A Model Based on Data Envelopment Analysis Roghyeh Malekii Vishkaeii Behrooz Danishian Farhad Hosseinzadeh lotfi