文献名：Where did all the borrowing go? A forensic analysis of the U.S. external position
作者：Philip R. Lanea, b, , and Gian Maria Milesi-Ferrettic,
杂志：Journal of the Japanese and International Economies
文献链接：http://www.sciencedirect.com/science/article/B6WMC-4TXF7WY-2/2/841467a0bce38e746e6e8094cf8247d6#afn1