I'm using lyx and bibtex for my master thesis. In lyx, I changed the bibliography style from standard to natbib (author-year). The problem occurs when I cite a paper with two authors. The reference to the paper is then like "Kahneman et al. (1979)" instead of "Kahnemann & Tversky (1979)". According to Harvard citation style, "et.al." should be used when three or more authors, not for two. Is there a way to change this?

  • 1
    If you click on your bibliography inset (the grey box that says "BibTeX Generated Bibliography", what do you have under "Style"? Do you get your desired PDF output after you change the style to "kluwer"?
    – scottkosty
    Commented Jun 9, 2014 at 9:57
  • for the bibliography I have a custom style (economet). The problem occurs not in the bibliography but when i cite a paper within the text.
    – Clemens
    Commented Jun 9, 2014 at 10:03
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    I believe the bibliography style determines that. Can you try changing to kluwer and see what happens in the PDF output to the citations in the text?
    – scottkosty
    Commented Jun 9, 2014 at 10:13
  • Welcome to TeX.SX! You don't have to sign with your name since it automatically appears in the lower right corner of your post.
    – jub0bs
    Commented Jun 9, 2014 at 10:19
  • @scottkosty indeed it determines the citations in the text. thank you. Now there it only a small matter left: how can I change the "and" between the two name to a "&"?
    – Clemens
    Commented Jun 9, 2014 at 10:33

1 Answer 1


A well-known bibliography style that generates authoryear-style citation call-outs and uses & as the conjunction if the bib entry has exactly two authors (or editors) is agsm. This bibliography style is part of the harvard citation management package, but it's compatible with the natbib package as well.

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