Label in Bibliography Item

[Martin]

Hi,

I'm writing with Lyx 1.0.1.
I can enter what I want in the Label in Bibliography Item. But the character '&' 
doesn't get displayed! I tried '&' and '&&' and more '&'s. Is this a feature? I 
can't think of a reason why this character doesn't get displayed. Or is it 
because of LaTex?
Thanks,
        Martin