Aside from me, I have not seen anyone give credit to the first researchers I know of to ever examine women raping men. They did it in 1982. Being the first paper, it is still sometimes cited by other papers. FYI, those researchers are Masters & Sarrell. (Yes, that Masters is the Masters of Masters & Johnson fame). It has a small sample - they looked at 11 cases. But you can argue the first study is the most important one. It put the issue on the map. So lets say "thank you" to these fine researchers. As far as I know, the complete paper is behind a paywall, but here's the link to the abstract.

https://link.springer.com/article/10.1007/BF01541979