1. Variation in color between intended matched shade and fabricated shade of dental porcelain;Wee;J Prosthet Dent,2002
2. Effect of individual shades on reliability and validity of observers in colour matching;Lagouvardos;Eur J Prosthodont Restor Dent,2004
3. Shade selection performed by novice dental professionals and colorimeter;Klemetti;J Oral Rehabil,2006
4. Evaluation of visual and instrument shade matching;Okubo;J Prosthet Dent,1998
5. Use of a common shade guide to test the perception of differences in the shades and value by members of the dental team;Geary;Prim Dent Care,1999