Here's an amusing if minor repeated typo in the literature: "appiled superconductivity", https://scholar.google.com/scholar?q=%22Appiled+Superconductivity%22 (177 hits). I think the source is IEEE, which spells Trans. on Applied Superconductivity correctly on its site but misspells it repeatedly in the doi database. So if you get your citations from doi metadata, you will get this error.
You can see the metadata for a doi by doing curl -LH "Accept: application/x-bibtex" on the url for the doi. Try e.g. 10.1109/TASC.2005.849553
@11011110 My favorite repeated typo is probably this one, which I think is mostly due to bad OCR but some instances I can't really explain:
@11011110 ooh, that's a good tip for getting bibtex!
@christianp MathSciNet's and DBLP's bibtex are usually cleaner, but this is good for when you need to cite something they don't have.
The social network of the future: No ads, no corporate surveillance, ethical design, and decentralization! Own your data with Mastodon!