Apparently, there has been some confusion about where to get the required reading. It is very simple:
You do not buy these texts, you read them online. Almost all this literature is available on the Web, all of it is available in the library. To be able to locate research literature is part of the requiremensts for the course.
To read most journals online, you need to use a computer connected to the University of Oslo network. Navigate to X-port from the homepage of the University library. Type the name of the journal into the search engine, and follow the links.