\setboolean{rahmen}{true}
	\begin{subfigure}[b]{0.45\textwidth}
		\resizebox{\textwidth}{!}{\input{rotated-polygons0}}
		\caption{Quelle: \cite{Garcia2012}}
	\end{subfigure} \quad
	\begin{subfigure}[b]{0.45\textwidth}
		\resizebox{\textwidth}{!}{\input{rotated-polygons1}}
		\caption{Quelle: \cite{Garcia2012}}
	\end{subfigure}

	\,\begin{subfigure}[b]{0.45\textwidth}	
		\resizebox{\textwidth}{!}{\input{rotated-polygons2}}
		\caption{Quelle: \cite{Garcia2012}}
	\end{subfigure} \quad
	\begin{subfigure}[b]{0.45\textwidth}
			\resizebox{\textwidth}{!}{
		 		\input{print-pig}
			}
			\caption{Quelle: \cite{Dongen2010}}
	\end{subfigure}
