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Hi cgnieder,

thanks for the answer..
I just reduced my work to show the problem and provide a minimal compilable tex.
So I compiled ....and..it now works correctly.
I expect there is a problem in the content.

Hi there,

I'm writing my thesis and of course use bibliography.
Everything works fine. Only the bibliography's indices stand there without the braces: [ and ]

Still tried different bibliography styles (geralpha, ieeetr, alphadin, acm).so indices changed from numbers to abbreviated authors as it ...