deletions | additions       diff --git a/figures/maser_level_diagram/caption.tex b/figures/maser_level_diagram/caption.tex  index 3edc337..f789632 100644  --- a/figures/maser_level_diagram/caption.tex  +++ b/figures/maser_level_diagram/caption.tex 
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\label{fig:energy_diagram} The physical processes relating the upper and lower energy states. The terms for each process have been converted into a rate per unit volume. This figure is an adaptation of Figure 14.7 in \citet{Stahler_1992}. \citet{stahler_palla_2004}.