Full Citation:
Buchin, Kevin, Eppstein, David, Löffler, Maarten, Nöllenburg, Martin, Silveira, Rodrigo I.. Adjacency-Preserving Spatial Treemaps. J. Computational Geometry, volume 7, number 1, pages 100-122, 2016.
Martin Nöllenburg is a Professor at the Algorithms and Complexity Group.