International economics is the study of how the production of one nation is purchased by another nation and how the currency of one nation is exchanged for the currency of another nation to pay for this production. What exactly international economics is and what it covers tend to depend on the views of the person using the definition. Roughly speaking, it covers economic interactions between countries such as international trade. Journal Article is sometimes called a Scientific Article, a Peer-Reviewed Article, or a Scholarly Research Article. Together, journal articles in a particular field are often referred to as The Literature. Journal articles are most often Primary Research Articles. However, they can also be Review Articles. These types of articles have different aims and requirements. Sometimes, an article describes a new tool or method. Because articles in scientific journals are specific, meticulously cited and peer-reviewed, journal databases are the best place to look for information on previous research on your species. Without a background in the field, journal articles may be hard to understand - however, you do not need to understand an entire article to be able to get valuable information from it.