F. Delaunois, PhD Thesis, Faculté Polytechnique de Mons, Mons, Belgium, 2002.
Bull S.J. Tribol. Int. 1997, 30:491.
European Committee for Standardization: Advanced Technical Ceramics - Methods of Tests for Ceramic Coatings - Part 3: Determination of Adhesion and Other Mechanical Failure Modes by Scratch Test. European Standard 1999.