I've two or more problems with bibliographies:

1) look at the attached attachment, the first brace.

2) @book{b,

  title={B Titel B},

  author={Brüser}, % error -> ü!!!

  year={2000},

  publisher={VS Verlag}

}

3) I want "just get a typeset version of the used database" (without \cite[a,b,c,d]), how to achieve this?