I am using Springer's template svjour3.cls. Since it can be easy to obtain package, for example here I am getting directly to the problem. I have the following MWE, some part comes from directly template

 Unlike \cite{harsanyi73}

The problem is that according to manual I need to write natbib in \documentclass[smallextended,natbib]{svjour3}, however, I am getting the error Package natbib Error: Bibliography not compatible with author-year citations. Also error is \providecommand\NAT@force@numbers{}\NAT@force@numbers. I added natbib as usual i.e. \usepackage[round]{natbib} and I got the same error. However, it works fine if I change round to numbers. I have already checked this question or this one, but I couldn't find a solution to my problem. Thanks for any help in advance!

Edit: Here is an example of bibliography

   author = {Harsanyi, John C.},
   title = {Games with Randomly Disturbed Payoffs: A New Rationale for Mixed-Strategy     Equilibrium Points},
    year = {1973},
 journal = {International Journal of Game Theory},
  volume = {2},
  pages = {1--23},
  • in additiom to the unrelated eps file the document ends \en{document} presumably you didn't test it before posting. Also C:/Local Tex Files/bibtex/bib/misc/bibch1 is not going to work for most people, just use \bibliography{bibch1} and supply a test bib file that shows the problem. Nov 10 '14 at 20:28
  • I have edited in the light of above comments. Still, as I expected the problem is there.
    – user64066
    Nov 10 '14 at 22:17
  • Thanks for posting usable code. Have you tried blowing away all aux files and recompiling from scratch? The reason I ask is that spbasic is a bibliography style that will indeed produce authoryear-style citation callouts if natbib is loaded without any options. Hence, the error message seems to be something of a misdirection, possibly because of some corrupted code in one of the aux files.
    – Mico
    Nov 10 '14 at 22:29
  • @Mico, I have tried a couple of times erasing all files and by recompiling, but couldn't figure it out what exactly problems is.
    – user64066
    Nov 10 '14 at 22:37
  • 2
    A problem might be \cite{harsanyi 73} with a space.
    – egreg
    Nov 10 '14 at 22:39

It should have been stated in the User Guide, but spbasic.bst contains the following:

For Springer medical, life sciences, chemistry, geology, engineering and computer science publications. For use with the natbib package (see below). Default is author-year citations. When citations are numbered, please use \usepackage[numbers]{natbib}. A lack of punctuation is the key feature.

  • Thank you! Adding \usepackage[numbers]{natbib} fixed my problem of the references formatting. This answer should have been accepted.
    – Huyen
    Jun 24 '21 at 7:46

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