1. Quercia G. Evaluación del comportamiento tribológico de materiales cerámicos metálicos y compuestos. Internship report, Simón Bolívar University 1999
2. Grigorescu C, Thompson S, Stuart M, Casas B, Quercia G, Di Rauso C. Assimilation of advanced ceramics in the oil industry, prepared to present in ICSHM7, Ixtapa-Mexico, March de 2001
3. ASTM G99-90, Standard test method for wear testing with a pin-on-disk apparatus
4. A new method for the intrinsic abrasion resistance of thin coatings;Kassman;Surf. Coat. Technol.,1991
5. A micro abrasive wear test, with particular application to coated systems;Rutherford;Surf. Coat. Technol.,1996