Review articles may appear in many different types of journals. Review journals can be a great source; here are a few examples. Find review articles on your topic by limiting your journal index searching to "review articles".
Background information comes in many forms. Here, below, are the standard tools you might consider in becoming more familiar with your topic, but, also, don't forget to try Holmes to see if we have any monographs/books on your topic. These can be very useful for providing established, extensive background information.