Michael Burch Hansjörg Schmauder Daniel Weiskopf Indented Pixel Tree Browser for Exploring Huge Hierarchies. 301-312 2011 ISVC (1) https://doi.org/10.1007/978-3-642-24028-7_28 conf/isvc/2011-1 db/conf/isvc/isvc2011-1.html#BurchSW11