共 4 条
- [2] Gravity with Gravitas: A Solution to the Border Puzzle[J] . James E. Anderson,Eric van Wincoop.The American Economic Review . 2003 (1)
- [3] A Theoretical Foundation for the Gravity Equation[J] . James E. Anderson.The American Economic Review . 1979 (1)
- [4] Toward Geography of Trade Costs. Hummels, D. . 2001