W. Charles Sawyer & Richard L. Sprinkle 
Demand for Imports and Exports in the World Economy [PDF ebook] 

First published in 1999, this volume responds to one of the more important issues in applied international economics: the extent to which trade flows adjust to changes in income, relative prices and exchange rates. This work surveys the literature on empirical estimation of the demand for imports and exports for the US. The book is designed to be a reference book for both academic international economists and international trade practitioners in government, international organisations and the private sector.