R programming language symbol

I am currently writing a paper where I mention the R programming language. I've seen some papers use a special symbol for R, but I can't figure out how to get it. Here's an example.

How do I get that symbol?

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Welcome to TeX.sx! –  texenthusiast Mar 27 '13 at 15:10

It is just `\textsf{R}`, or even `\textbf{\textsf{R}}`