deletions | additions       diff --git a/Concepts.tex b/Concepts.tex  index 21c6c5c..acc65f8 100644  --- a/Concepts.tex  +++ b/Concepts.tex 
...
For this reason we encourage performing a burst size selection after background  correction, possibly taking into account the γ factor, as discussed in  sections~\ref{sec:burstsizeweights} and~\ref{sec:burstsel}.  In special situations, users can also choose to replace this size selection  with another criterion such as burst duration or brightness.  \subsection{γ-corrected Burst Sizes and Weights}  \label{sec:burstsizeweights}  The number of photons detected during a burst, commonly called ``burst size'',  is usually computed using either all photons, or photons detected   during donor excitation period. To compute the burst size $n_t$, size,  FRETBursts uses one of the following formulas:  \begin{equation}  \label{eq:burstsize_dex}  n_t n_{dex}  = n_a + \gamma\,n_d \end{equation}  \begin{equation} 
...
\noindent where $n_d$, $n_a$ and $n_{aa}$ are, similarly to the attributes   in tables~\ref{tab:data_n}, the background-corrected  burst counts in different channels and excitation periods,  and $\gamma$ is periods.  $\gamma$, dubbed  the γ factor. ``γ factor'', takes into account  different quantum yield of donor and acceptor dyes and different  photon detection efficiencies between donor and acceptor detection  channel~\cite{Lee_2005}.  Eq.~\ref{eq:burstsize_dex} includes only photons during donor excitation periods,   while eq.~\ref{eq:burstsize_allph} includes all photons.  Burst sizes computed according to eq.~\ref{eq:burstsize_dex}