共 38 条
[31]
ROUNDY RW, 1978, SOC SCI MED-MED GEOG, V12, P121
[32]
Schoenberg NE, 1998, J RURAL HEALTH, V14, P295
[33]
Shah B, 1997, SUDAAN USERS MANUAL
[34]
Stamatiadis N, 1996, TRANSPORT Q, V50, P113
[35]
Stokes ME., 2000, CATEGORICAL DATA ANA, VSecond
[38]
Zerubavel Eviatar., 1979, PATTERNS TIME HOSP L