Emanuel Tov is indeed an excellent scholar to read. In particular I liked reading his introduction to the text/textual criticism of the Hebrew Bible. He came out supporting Iao as original in the LXX in an essay in this book:
https://www.amazon.co.uk/Bible-Book-Transmission-Greek-Text/dp/0712347275/
I think Frank Shaw's thesis (less expansive than his later book) is available online somewhere, but I can't find it right now!