1Morgan, F.W.. Observations on the study of hinterlands in Europe. Tijdschrift sociale en economische geografie, 1951 (42): 366-371.
2Haralambides, H.E.. Competition, Excess Capacity and the Pricing of Port Infrastructure. International Journal of Maritime Economics, 2002 (4) : 323-347.
3Kevin Cullinane, Yahui Teng. Port Competition between Shanghai and Ningbo [J]. Maritime Policy & Management,2005,32 (4):331-346.