I just dig through google scholar till I find something good. The first paper cites "Conditioning and Intervening" by Meek and Glymour, which I looked at recently, so maybe that's how. I can also get to it by searching for "decision theory" within papers citing Pearl's "Causality" (though it's a few pages in). Also, I think Ledwig mentioned Spohn's older stuff in her dissertation on Newcomb's problem. Kind of hard to reconstruct search paths.
Makes sense. Thanks.
If it's worth saying, but not worth its own post, even in Discussion, it goes here.