%0 Journal Article %A Tamara Mchedlidze %A Antonios Symvonis %T Crossing-Optimal Acyclic HP-Completion for Outerplanar st-Digraphs %J Journal of graph algorithms and applications %D 2011 %P 373-415 %V 15 %N 3 %U http://geodesic.mathdoc.fr/articles/10.7155/jgaa.00231/ %R 10.7155/jgaa.00231 %G en %F JGAA_2011_15_3_a3