%0 Journal Article %A Naumann, Uwe %T DAG reversal is NP-complete %J Journal of discrete algorithms : JDA %V 7 %N 4 %@ 1570-8667 %C Amsterdam [u.a.] %I Elsevier %M RWTH-CONV-014861 %P 402-410 %D 2009 %F PUB:(DE-HGF)16 %9 Journal Article %R 10.1016/j.jda.2008.09.008 %U https://publications.rwth-aachen.de/record/133814