Provenzano, M. R., El Bilabi, H., Simeone, V., Mondelli, D. and Baser, N. (2011) “Total sulphur contents over a three-year period in different organic vineyards of Apulia region, South-Eastern Italy”, Italian Journal of Agronomy, 6(3), p. e27. doi: 10.4081/ija.2011.e27.