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Maximisation of ridership appears to be inefficient, but this depends on the demand and cost functions. It is also necessary to know these to judge the efficiency of any subsidy formula.
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Stored only when both papers are in the corpus — 33 citations exist upstream.
Papers that cite the same references — the relational fallback while embeddings are still backfilling.
Imported from OpenAlex (CC0) — nothing here is generated.