4Edward A. Evans, Understanding exchange rates: A weakening U. S. dollar-good, bad, or indifferent for florida farmers and agribusinesses, University of Florida IFAS Extension, http: //edis. ifas. ufl. edu/fe546. 被引量：1
5Dallas S. Batten , Michael T. Belongia, the recent decline in agricultural exports: is the exchange rate the culprit? http: //research. stlouisled. org/publications. 被引量：1
6Alberta Agriculture and Rural Development, how exchange rates affect agricultural markets -2005, http: //wwwl. agrie.gov. ab. ca. 被引量：1
