Dear Sir i need definitions for 1-Inflation, 2-Foreign direct investment,3-Exchange rate,4-foreign exchange reserve,5-exports for my phd thesis,but i need these definitions with reference of research articles ie must be used in standardized research article.I have gone through lot of articles but didnt find the right one if anyone can help me and share articles or link of articles in which these variables were used with their definitions this will be a great help for a phd scholar.Kind Regards Umer Ilyas