M. Scarsella, M. Bracciale, B. De Caprariis, P. De Filippis, A. Petrullo, L. Pronti, M. Santarelli, Improved Photocatalytic Properties of Doped Titanium–Based Nanometric Oxides , Chemical Engineering Transactions. 60 (2017) 133-138. doi:10.3303/CET1760023.