Extraction of titanium (IV) from acidic media by 2-ethylhexyl phosphonic acid mono-2-ethylhexyl ester, Fontana, Danilo, Kulkarni P., and Pietrelli L. , Hydrometallurgy, Volume 77, Number 3-4, p.219-225, (2005)

Recovery of titanium (IV) by hydrometallurgical treatments from fly ashes generated from municipal incineration plants, Fontana, Danilo, Giacco S., Pietrelli L., and Porzio V. , REWAS'04 - Global Symposium on Recycling, Waste Treatment and Clean Technology, Madrid, p.263-271, (2005)