Why does Trump’s tariff explainer reference a paper it doesn’t cite?

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By now you’ll surely have seen the Trump administration’s self-cancelling and probably back-engineered tariff formula, as summarised below by a Stinson Dean tweet:

But it’s not the only oddity in the tariff executive summary posted overnight. In the “references” section is an academic paper not mentioned in the main text: Trade Wars with Trade Deficits (2024) by…