1. Luminescent veneers;McLaren;J Esthet Dent,1997
2. Color for science, art and technology;Nassau,1998
3. Opalescence of dental porcelain enamels;Primus;Quintessence Int,2002
4. A newly developed “opal” ceramic and its clinical use, with special attention to its relative refractive index;Yamamoto,1989
5. Light and color in anterior composite restorations;Vanini;Pract Periodont Aesthet Dent,1996