Question

I was to do some reading on internationalization (entry of foreign markets). However, by a simple spelling mistake I generated a lot of articles on "internalization" instead of "internationalization". So I have been reading a lot on internalization (Buckley and Casson, 1976). This has of course confused me a lot. So, right now I wonder how internalization and internationalization are connected? What is the difference between internalization theory and internationalization?