Andréas LYBERIS wrote:

> Hi,
> 
> I will try to explain clearly my problem.
> 
> I am writting a scientific report and I added the bibliography via
> Bibdesk (Bibtex for mac).
> The default organisation of the bibliography is alphabetical: all my
> references are classified in the alphabetical order of the authors.
> And with this system my first citation is number 8.
> 
> I would like to change this and organise the bibliography with the
> order of appearence is the document. Or put the name and year for the
> citation instead of the number (I tried Natbib but it is on my screen
> of lyx but not on my pdf file, still with number).
> 
> How can I do both of the changes,
> Thanks

You have to chose the unsrtnat bibliography style. 

To put the Author Year label, I guess you can google for chicago.bst

Cheers,
Charles

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