Yale SH.
Ill Dent J. 1985 May-Jun;54(3):154-5.
PMID: 3861571

Ward MJ.
Bur. 1988;91(4):12-3.
PMID: 3271170

Bales DJ.
Oper Dent. 1990 Jul-Aug;15(4):121.
PMID: 2216903

Fifield CA.
Ill Dent J. 1988 May-Jun;57(3):215-6.
PMID: 3215663

Newman S.
Oper Dent. 1988;13(2):87-93.
PMID: 3270042

Saunders WA.
J Am Coll Dent. 1990;57(2):5.
PMID: 2365924

[No authors listed]
Nihon Shika Ishikai Zasshi. 1978;31(9):992-1008.
PMID: 285180