@article{CGMW2010
, author    = {Markus Chimani and
               Carsten Gutwenger and
               Petra Mutzel and
               Hoi-Ming Wong}
, title     = {Layer-Free Upward Crossing Minimization}
, journal   = {ACM Journal of Experimental Algorithmics}
, volume    = {15}
, year      = {2010}
, pages     = {2.2:1--2.2:27}
, doi       = {10.1145/1671970.1671975}
}