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PMID: 4526575

Swanson LT.
Harv Dent Alumni Bull. 1970 Aug;30(2):48-9.
PMID: 5269470

Coles FV.
Iowa Dent J. 1968 Apr;54(2):18-9.
PMID: 5241556

[No authors listed]
Alumni Bull Univ Mich Sch Dent. 1968 Oct;70(17):19-28.
PMID: 5247350

[No authors listed]
Chir Dent Fr. 1975 Oct 22;45(275):33-4.
PMID: 1073090

[No authors listed]
J Am Dent Assoc. 1971 May;82(5):973-88.
PMID: 5279669

Holzhauer R.
Greater Milw Dent Bull. 1970 Jan;36(1):5.
PMID: 5268456