“Definitions of SF”, _The Encyclopedia of Science Fiction_ (last modified June 2020).

https://sf-encyclopedia.com/entry/definitions_of_sf

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“History of SF”, _The Encyclopedia of Science Fiction_ (last modified December 2022).

https://sf-encyclopedia.com/entry/history_of_sf

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The article in _The Encyclopedia of Science Fiction_ about itself (last modified October 2021).

https://sf-encyclopedia.com/entry/encyclopedia_of_science_fiction_the

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