\relax 
\citation{thomas-update}
\citation{thomas-update}
\citation{bauerfeld-pds}
\citation{tutte-chromial}
\bibcite{birkhoff}{1}
\bibcite{heesch}{2}
\bibcite{appel-haken}{3}
\bibcite{rsst}{4}
\bibcite{thomas-update}{5}
\bibcite{tutte-chromial}{6}
\bibcite{bauerfeld-pds}{7}
\gdef \@abspage@last{7}
