%0 Generic
%A Healy, Patrick
%A Lynch, Karol
%D 2004
%E Pach, János
%F gdea_3:596
%I Springer
%P 296-306
%T Building Blocks of Upward Planar Digraphs
%U http://gdea.informatik.uni-koeln.de/596/
%X We show that a digraph is upward planar if and only if its biconnected components have certain properties.