deletions | additions       diff --git a/Energies.tex b/Energies.tex  index db87e19..d16d437 100644  --- a/Energies.tex  +++ b/Energies.tex 
...
\end{equation}  where $\alpha_{stnm}=\gamma_{st}-\gamma_{nm}$. Therefore, one can easily see that for $s=n$ and $t=m$ the matrix element becomes $=\delta_{MN}$.  \cite{Harris_1996}  \end{document}