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I'm using Biblatex and biber for my citation needs, but I have the problem, that one citation remains undefined, if I cite more than 3 authors, with 3 it shows up, with more than that it is undefined!
Anyone had this problem and knows a solution?

marked as duplicate by Johannes_B, moewe, Mensch, Claudio Fiandrino, lockstep biblatex Apr 10 '15 at 14:11

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    Hi, sounds strange. I think we need a bit more information. Did you run biber again? – Johannes_B Apr 10 '15 at 12:46
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    authors should always be separated by and (as far as I know). So your line should be author = {Cowan, Crispin and Wagle, Perry and Pu, Calton and Beattie, Stevie and Walpole, Jonathan} – darthbith Apr 10 '15 at 12:55
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    YOU SHALT NOT USE COMMAS TO DELIMIT AUTHORS. Use and instead. If you picture that grey bearded man from lord of the rings saying that, you will never forget it again – Johannes_B Apr 10 '15 at 12:56
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    Seems to be a duplicate of How to write properly multiple authors in bibtex file?. – moewe Apr 10 '15 at 13:11
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    Don't ignore the biber messages (in the .blg). It normally complains quite obviously if an authorlist contains too much commas. – Ulrike Fischer Apr 10 '15 at 13:27

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