Full Citation:
Michael Bekos, Sabine Cornelsen, Martin Fink, Seok-Hee Hong, Michael Kaufmann, Martin Nöllenburg, Ignaz Rutter, Antonios Symvonis. Many-to-One Boundary Labeling with Backbones. J. Graph Algorithms Appl., volume 19, number 3, pages 779–816, 2015.
Martin Nöllenburg is a Professor at the Algorithms and Complexity Group.