共 6 条
[2]
CURRANT J, 1984, J REGION SCI, V24
[3]
Dijkstra EW., 1959, NUMER MATH, V1, P269, DOI DOI 10.1007/BF01386390
[5]
HAKIMI SL, 1965, OPNS RES, V13, P412
[6]
HANDLER GY, 1979, LOCATION NETWORKS TH