共 5 条
[1]
*HIGHW RES BOARD, 1962, 61E AASHO ROAD TEST
[2]
JONESLEE M, 1987, POLICY J
[3]
NILSSON JE, 1991, 2ND BEST PROBLEMS RA
[4]
PERSSON U, 1990, VALUE RISK REDUCTION
[5]
SMALL KA, 1988, AM ECON REV, V78, P560