Any plugin that can track clicks (adsense) on a article?

Hello!

I have a site with multiple authors and I would like to give my authors 25-50% of their adsense earnings on their articles, is there any plugin that can see on whos article that is clicked and so on.. Or any automatic system?

That’d be lovely. I think I saw one yesterday but I just closed the window and I already emptied my web history…

Thanks!