List of Articles flexible function Open Access Article Abstract Page Full-Text 1 - Comparison of the performances of neural networks specification, the Translog and the Fourier flexible forms when different production technologies are used R Feki Open Access Article Abstract Page Full-Text 2 - Estimated Demand and Economic Value of Water in Production of Forage Sorghum in Sistan حلیمه Piri ملیحه Heidari Open Access Article Abstract Page Full-Text 3 - Determination of economic value and water productivity in major products of Iranshahr H. Piri malihe heidari