@article{CGMW2011
, author    = {Markus Chimani and
               Carsten Gutwenger and
               Petra Mutzel and
               Hoi-Ming Wong}
, title     = {Upward Planarization Layout}
, journal   = {Journal of Graph Algorithms and Applications}
, volume    = {15}
, number    = {1}
, year      = {2011}
, pages     = {127--155}
, URL       = {http://www.cs.brown.edu/sites/jgaa/accepted/2011/ChimaniGutwengerMutzelWong2011.15.1.pdf}
}