\multicolumn{2}{l}{\underline{\large\scshape\raggedright Official supervisors}}\\
\multicolumn{2}{c}{}\\
\textsc{Prof. Bernd Stritzker} &
\multicolumn{2}{l}{\underline{\large\scshape\raggedright Official supervisors}}\\
\multicolumn{2}{c}{}\\
\textsc{Prof. Bernd Stritzker} &