deletions | additions       diff --git a/XC Functionals.tex b/XC Functionals.tex  index 7f9a9f6..5622eb4 100644  --- a/XC Functionals.tex  +++ b/XC Functionals.tex 
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KS orbitals.  Support for the first three rungs and for the local part of the hybrid  functionals in Octopus is provided throught through  the Libxc library~\cite{Marques_2012}. Libxc started as a spin-off project during  the initial development of Octopus. At that point it became clear that  the task of evaluation of the xc functional was completely independent