Giannakopoulos, A. E., Kordolemis, A. and Zisis, Th. (2009) Development of strong surfaces using functionally graded composites inspired by natural teeth—a theoretical approach. Journal of Engineering Materials and Technology-Transactions of ASME, 132 (1):011009. ISSN 0094-4289 (Print), 1528-8889 (Online) (doi:10.1115/1.3184037)