[1]
M. T. Ludden, R. Welsh, E. Weissman, D. Hilchey, G. W. Gillespie, and A. Guptill, “The Progressive Agriculture Index: Assessing the Advancement of Agri-food Systems”, J. Agric. Food Syst. Community Dev., vol. 8, no. 3, pp. 159–185, Oct. 2018.