McArthur, H.J.; Dalsgaard, J.P.T. (1998). Sustainability indicators from farm to watershed: a synthesis of issues. p.242-247. In: Ranaweera, N.F.C. ; Gunasena, H.P.M. ; Senanayake, Y.D.A. (eds.) Changing agricultural opportunities: the role of farming systems approaches. Proceedings of the 14th International Symposium on Sustainable Farming Systems
