Production Functions for Wheat Farmers in Selected Districts of Pakistan: An Application of a Stochastic Frontier Production Function with Time-varying Inefficiency Effects. The Pakistan Development Review, [S. l.], v. 32, n. 3, p. pp.233–268, 2022. DOI: 10.30541/v32i3pp.233-268. Disponível em: https://thepdr.pk/index.php/pdr/article/view/1148. Acesso em: 9 jun. 2025.