In vivo characterization of Zirconia Toughened Alumina material: A comparative animal study, Maccauro, G., Cittadini A., Magnani G., Sangiorgi S., Muratori F., Manicone P.F., P. Iommetti Rossi, Marotta D., Chierichini A., Raffaelli L., et al. , International Journal of Immunopathology and Pharmacology, Volume 23, Number 3, p.841-846, (2010)