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Peer-reviewed scholarship
Academic journal articles on this question, from Crossref, the official registry publishers use to record scholarly work. We don’t write these, choose them, or vouch for their conclusions — they are what the literature contains, listed so you can check us against it.
Filtered to journal articles with a DOI, with preprint repositories such as SSRN and arXiv excluded because their papers have not been refereed. That is the closest an index can get to “peer-reviewed” automatically — a strong signal, not a guarantee, so weigh each source yourself. Items marked Open access carry a Creative Commons licence and are free to read; the rest may sit behind a publisher paywall, though many are available through a library.