共 29 条
[2]
BECKMANN MJ, 1956, STUDIES ECONOMICS TR
[3]
BISI W, 1959, STATISTICA, V19, P422
[4]
Clayton A. J. H., 1941, J I CIVIL ENG, V16, P247, DOI [10.1680/ijoti.1941.13660, DOI 10.1680/IJOTI.1941.13660]
[5]
CLAYTON AJH, 1941, J I CIVIL ENGRS, V16, P558
[8]
GAZIS DC, 1963, 2 INT S TRAFF FLOW T
[9]
GRACE MG, 1964, 2 C AUSTR ROAD RES B