=easyPubMedvig.xml=  is from the example in the vignette for R package easyPubMed.

=Putnam1992.end= is /Example 1 Example refer format file/ from the man page of bibutils.

=ex1.endx= is from https://gist.githubusercontent.com/raw/3831049/80f1315ba03d278b4f5f0d916fb1999709fc40e6/endnote.xml
