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This question already has an answer here:

I don't remember where, but I read that it is not recommended to write, in a article, something like

[...], as detailed in [1].

Instead, we should write

[...], as detailed by Someone [1].

In other words, reference numbers should not be treated as nouns. Why is it so? I see nothing disturbing with the first form.

marked as duplicate by Massimo Ortolano, Community Mar 17 '17 at 21:04

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