Negro, C.; De Bellis, L.; Sabella, E.; Nutricati, E.; Luvisi, A.; Miceli, A. Detection of Not Allowed Food-Coloring Additives (copper Chlorophyllin; Copper-Sulphate) in Green Table Olives Sold on the Italian Market. Adv. Hort. Sci. 2017, 31, 225-233.