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  1. txt <-"Name, Name. Title. Pub. Year; Details."
  2. sub(".*\\.([^.]*)(?:\\.[^.]*){2}$", "\\1", txt)
  3.  
Success #stdin #stdout 0.15s 175424KB
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[1] " Pub"
https://ideone.com/8QsaSi
language:
R (R 3.5.2)
created:
8 years ago
visibility:
secret

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