Re: Cyrillic in BIbTeX

In article <vhi8dg$1sngj$1@dont-email.me>, dieterhansbritz@gmail.com
says...

 
I know about setting \newcommand{cyr}... and then using
\cyr{text}, but the text is inside a bib-file. So if I
set that command in the manuscript and cite an article
for which the bib-file contains the cyrillic word in a
note, will BibTeX know about it? Or how do I do it?

One solution is described in
https://tex.stackexchange.com/questions/645615/how-to-cite-a-few-
russian-sources-in-an-english-document.

A more modern approach would use polyglossia instead of babel, and then

\setmainlanguage[variant=british]{english}

\setotherlanguage[babelshorthands=true,numerals=arabic]{russian}
\newfontfamily\russianfont{FreeSerif}