@unpublished{reynolds2026didcorpus,
  author = {Reynolds, Brett},
  title = {Difference-in-Differences for Corpus Linguistics: Causal Inference, Corpus Composition, and Linguistic Change after Shocks},
  year = {2026},
  note = {Preprint, LingBuzz/010080},
  url = {https://lingbuzz.net/lingbuzz/010080}
}