共 9 条
[7]
Gravity with Gravitas: A Solution to the Border Puzzle[J] . James E. Anderson,Eric van Wincoop. The American Economic Review . 2003 (1)
[9]
The Industrial Composition of U.S. Exports and Subsidiary Sales to the Canadian Market[J] . Thomas Horst. The American Economic Review . 1972 (1/2)