共 31 条
[3]
Bjorn A L, 1975, Odontol Revy, V26, P225
[4]
Bjorn H, 1966, Odontol Revy, V17, P232
[5]
BLACK AD, 1918, D SUMMARY, V38, P924
[6]
CHEBIB FS, 1976, ANGLE ORTHOD, V46, P305
[7]
Cochran W.G, 1957, STAT METHODS, V6th ed
[9]
EGGEN S, 1976, QUINTESSENCE INT, V10, P67
[10]
ENGELBERGER A, 1963, HELVETICA ODONTOLOGI, V7, P34