K. Kamonpatana, P. Anuntavoranich, J. Varodompun, P. Sunakorn, D. Thaitakoo, and K. Wattanapreechanon, “Modified Fuzzy Delphi Method to Select Decision Variables for Vertical Farming in Thailand”, kasetsart J. Soc. Sci., vol. 36, no. 3, pp. 554–567, Dec. 2015.