And a piece in Journal of Interdisciplinary History:
https://direct.mit.edu/jinh/article-abstract/36/2/209/48104/Propensity-Score-Methods-and-the-Lenin-School
https://direct.mit.edu/jinh/article-abstract/36/2/209/48104/Propensity-Score-Methods-and-the-Lenin-School
Comments
I still think that is the right basic approach. However, to be honest the implementation isn't that great, and I'd do thing rather differently if I were doing something similar now.