in Austria. The publication of this work by Reichert Verlag was made possible thanks to an award from the "Society for Indo-European studies" (Indogermanische Gesellschaft) which I received in 2013. Since I was planning to thoroughly revise several parts of the original text, I decided not to publish my thesis directly at that time. Nevertheless, such a revision would essentially mean rewriting the whole work and although an in-depth reshaping would have been the optimal scenario, it would demand more time than I could spend.