I have  some equations written using  the cases environment in  tex style,
e.g.:

\[
\pi (w_r|\vec{w}) =
\begin{cases}\frac{1}{\eta} f \left(
\frac{w_r'-(1-\eta)w_r}{\eta}\right) + C_r(\vec{w})\delta(w_r'-w_r), &
  \alpha_r(\vec{w}) \le w_r' \le \beta_r(\vec{w}) \\
C_r(\vec{w})\delta(w_r'-w_r), & w_r' < \alpha_r(\vec{w}) 
  \vee w_r' > \beta_r(\vec{w})
\end{cases} 
\]

What is  the best way to  label it? It would  be great if it  was possible
having lyx  recognize such a  label, so I could  reference it in  the text
using the Insert->Cross Reference utility.
-- 
Cheers,
    Davide Cavallari                
An optimist believes we live in the best world possible; 
a pessimist fears this is true.

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