Heading down the rabbit hole…
Qwikiverse maps the references between stories: what Battlestar Galactica nods to, and what nods back. How it works
Wikipedia: Battlestar Galactica (2004 TV series)
See the Wikipedia image description for credits.
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Nothing spotted here yet.
A line quoted, a cameo, a character named after something: if Battlestar Galactica nods to another story, or another story nods to it, spot the first one.