deletions | additions       diff --git a/M&M - rbe.tex b/M&M - rbe.tex  index 53292e4..2110a3c 100644  --- a/M&M - rbe.tex  +++ b/M&M - rbe.tex 
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By using Eq. \ref{eq_analytical} a relatively simple expression of the RBE can be derived  \begin{equation}\label{rbe} \begin{equation}\label{eq_rbe}  \text{RBE} = \frac{R}{2D}\left( -1 + \sqrt{1 + \frac{4}{R}\left(\text{RBE}_\alpha D + \frac{D^2}{R}\right)} \right)  \end{equation}