1. The all-porcelain labial margin for ceramometal restorations: a new concept;Prince;J Prosthet Dent,1983
2. A new metal ceramic crown;McLean;J Prosthet Dent,1978
3. A manual for the fabrication of the complete porcelain margin;Vryonis,1982
4. Metal ceramics, principles and methods of Makito Yammamoto;Yammamoto,1985
5. Clinical study employing a photoelectric colorimeter to study discoloration of gingiva after cementation of crowns;Takahashi;Shikwa Gakuho,1984