There are many ways to theorize transnational law. As always, there is a mainstream, and there are “sidestreams.” However, it may be more interesting to consider from which direction such theories develop. Here, in appreciation of what the German Law Journal did to transnational legal conversations, I suggest to consider three directions in transnational legal studies: (1) theorizing from above; (2) theorizing from below; and (3) theorizing from inside. As you will see, much of the theories are in the German Law Journal (GLJ).
Baer, Susanne. "Theorizing Transnational Law - Observations on a Birthday." German L.J. 10, no. 10 (2009): 1319-24.