jezZiFeR wrote:

> Thank you. The problem is, that Lyx still produces errors. What could
> be the problem then?
> This is the error-message:
> 
> error:
> LaTeX Error: File `biblatex.sty' not found.
> 

Did you install biblatex on your computer ?

If not and you are using MacTeX follow the instructions here : 

http://www.1984produkts.com/donkeyhottie/archives/2008/05/11/mla-bibliographies-in-mactex/

> description:
>   \bibliography
> {<name of BibDesk-file>}^^M
> *** (cannot \read from terminal in nonstop modes)
> 
> In the latex preamble I entered the following:
> \usepackage{bibgerm} % Unterstützung für deutsche BibTeX styles

I don't think it is needed with biblatex 

> \usepackage{microtype} %Zuschaltung des Kernings
> \usepackage[style=authoryear,natbib=true]{biblatex}
> \bibliography{<name of BibDesk-file>}
> 
> for the bibtex-toc-index (bibtex-literaturverzeichnis) I use "plain"-
> style and database "articles"


Cheers,
Charles