共 41 条
[21]
HALL FL, 1973, 150 U CHIC DEP GEOGR
[22]
Hitchcock F.L., 1941, J MATH PHYS, V20, P224, DOI DOI 10.1002/SAPM1941201224
[23]
KANE RL, 1969, HLTH SERVICE RES SUM
[26]
LEBALANC L, 1974, TRANSPORTATION SCI, V8, P344
[27]
Losch A, 1940, EC LOCATION
[28]
MORRILL R, 1970, GEOGRAPHICAL ANAL, P283
[29]
FACTORS INFLUENCING DISTANCES TRAVELED TO HOSPITALS
[J].
ECONOMIC GEOGRAPHY,
1970, 46 (02)
:161-171
[30]
MORRILL RL, 1969, HEALTH SERV RES, P128