Martin Nöllenburg Markus Völker Alexander Wolff Danny Holten Drawing Binary Tanglegrams: An Experimental Evaluation. 106-119 2009 ALENEX http://www.siam.org/proceedings/alenex/2009/alx09_011_nollenburgm.pdf conf/alenex/2009 db/conf/alenex/alenex2009.html#NollenburgVWH09