共 6 条
[1]
FLEISS JL, 1973, STATISTICAL METHODS, P102
[2]
FASTER SCREEN-FILM COMBINATIONS FOR CEPHALOMETRIC RADIOGRAPHY
[J].
ORAL SURGERY ORAL MEDICINE ORAL PATHOLOGY ORAL RADIOLOGY AND ENDODONTICS,
1981, 52 (06)
:661-665
[3]
Siegel S., 1956, NONPARAMETRIC STAT, P166
[6]
1980, KODAK FILMS SCREENS