[4] "The transatlantic economy 2010" by D. Hamilton and J. Quinlan, Center for Transatlantic Relations, Johns Hopkins University , and 'Basic Survey of Overseas Business Activities, 2010', METI, Japan.
[3] D. Hamilton und J. Quinlan: „The transatlantic economy 2010“, Center for Transatlantic Relations, Johns Hopkins University und „Basic Survey of Overseas Business Activities“, 2010, METI, Japan.