\relax \citation{Michael} \@writefile{toc}{\contentsline {section}{\numberline {1}Introduction}{1}} \@writefile{toc}{\contentsline {section}{\numberline {2}The top-down vs. the bottom-up approach}{1}} \citation{di} \citation{di} \citation{di3} \citation{di3} \@writefile{toc}{\contentsline {section}{\numberline {3}Leptogenesis from the bottom-up}{2}} \bibcite{Michael}{1} \bibcite{di}{2} \bibcite{di3}{3} \@writefile{toc}{\contentsline {section}{\numberline {4}Conclusions}{3}}