I use \bibliographystyle{IEEEtran} for a paper and bibtex with entries like the following:

author = {Author1, A. and Author2, B. and Author3, C.}
title = {blabla}

In the references/bibliography this is displayed as A. Author1, B. Author2, **and** C. Author3. I recently saw another paper, in which the and before the last author was omitted. How can I achieve this? Do I have to "hardcode" the string with commas in between?

I would also appreciate smaller spacing, e.g., between abbreviated first names and the last name.

  • Are you using biblatex as your tag suggests or not?
    – TeXnician
    Jul 18, 2017 at 10:50
  • The delimiter between names is controlled by the style you use. You can not change it in the .bib file (you will always have to use and as separator in the .bib file). What style do you use?
    – moewe
    Jul 18, 2017 at 11:01
  • Sorry I used the wrong tag: I'm using bibtex via TeXstudio. I use bibliographystile IEEEtran. Jul 18, 2017 at 11:04
  • Just use another style. Or create your own with makebst. Or switch to BibLaTeX. Jul 18, 2017 at 12:48
  • By making this change, in the BST file, from FUNCTION {bbl.and}{ "and" } to FUNCTION {bbl.and}{ }, you can omit the and before the last author. Jul 18, 2017 at 14:56

1 Answer 1


I suggest you proceed as follows:

  • Locate the file IEEEtran.bst in your TeX distribution. Make a copy of this file and call the copy, say, IEEEtran-noand.bst. (You are obviously free to choose another name.) Important: Don't edit an original, un-renamed file from the TeX distribution

  • Open the file IEEEtran-noand.bst in a text editor. The program you use to edit your .tex files will do fine.

  • Inside the file IEEEtran-noand.bst, locate the following line (it should be on line 193):

    FUNCTION {bbl.and}{ "and" }

    Change it to

    FUNCTION {bbl.and}{ "" }
  • Save the file IEEEtran-noand.bst either in the directory where your main tex file is located or in a directory that's searched by BibTeX. If you choose the latter method, be sure to update the filename database of your TeX distribution suitably.

  • In your main tex file, change the instruction \bibliographystyle{IEEEtran-noand} to \bibliographystyle{IEEEtran-noand} and perform a full recompile cycle: LaTeX, BibTeX, and LaTeX twice more.

Happy BibTeXing!

A full MWE:

enter image description here

 author  = "Anne Author and Brenda Buthor and Carlo Cuthor and Doris Duthor",
 title   = "Thoughts",
 year    = 3001,



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