%0 Journal Article %A André Kündgen %A Eric Mendelsohn %A Vitaly Voloshin %T Colouring planar mixed hypergraphs %J The electronic journal of combinatorics %D 2000 %V 7 %U http://geodesic.mathdoc.fr/articles/10.37236/1538/ %R 10.37236/1538 %F 10_37236_1538