Koondhar, M. A., H. Li, M. A. Joyo, and F. Ahsan. “Impact of Land Fragmentation on Rice Production Efficiency, Comparative Study of Upper and Middle Sindh Province of Pakistan”. Global Journal of Business, Economics and Management: Current Issues, vol. 11, no. 3, Nov. 2021, pp. 235-53, doi:10.18844/gjbem.v11i3.4694.