I have following literature in my .bib file:

title={Earth observation for humanitarian assistance},
  author={Lang, Stefan and Schoepfer, Elisabeth and Zeil, Peter and Riedler, Barbara},
  booktitle={GI Forum--J Geogr Inf Sci},

When I try to cite it with \parencite{} or with \citet{} it always appears with the name of the author in the .pdf file:

(Stefan Lang, Schoepfer, et al., 2017)

I want to get rid off the "Stefan"

same here

  title={Earth Observation for Humanitarian Operations},
  author={Lang, Stefan and F{\"u}reder, Petra},
  publisher={Verlag der {\"O}sterreichischen Akademie der Wissenschaften}

I cite it with \citet{...} and it appears like this in the .pdf:

Stefan Lang and Füreder (2015)

and again "Stefan" appears!

What can I do against this, because all the other citations work perfectly except of these two.

  • 2
    Is there another author called Lang in your bibliography? biblatex has a feature to disambiguate ambiguous family names which means that it may add a given name initial or write out the entire given name to avoid confusion as to which "Lang" is meant. See tex.stackexchange.com/q/134535/35864 – moewe Apr 2 '19 at 5:46
  • 1
    Note that for the purposes of the uniquename disambiguation Knuth, Donald, Knuth, Donald E. and Knuth, D. E. are three different people and biblatex would try to disambiguate them accordingly. So it may well be that you don't have another Lang in the usual meaning of the word, but just another form of the same Lang's name, e.g. Lang, Stefan and Lang, S. or Lang, Stefan R. or ... – moewe Apr 2 '19 at 6:03
  • Any news here? As the question stands now it is very likely a duplicate of the one I linked and if nothing happens in due time I will vote to close as such. But it would be great if you could give a short heads-up and tell us if it worked. – moewe Apr 4 '19 at 5:38
  • I voted to close as a duplicate since there were no developments here. If the duplicate did not help, please update your question with a complete example document (tex.meta.stackexchange.com/q/228/35864) that shows how uniquename=false did not help. I'll happily vote to reopen if you ping me in that case. – moewe Apr 7 '19 at 12:53

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