共 22 条
[8]
计量经济学导论[M]. 中国人民大学出版社 , (美)J.M.伍德里奇(JeffreyM.Wooldridge)著, 2003
[9]
Distorted Gravity: The Intensive and Extensive Margins of International Trade[J] . Thomas Chaney.The American Economic Review . 2008 (4)