Vertical visibility among parallel polygons in three dimensions
R. Fulek, R. Radoidi, in:, Graph Drawing and Network Visualization, Springer Nature, 2015, pp. 373–379.

Representing directed trees as straight skeletons
O. Aichholzer, T. Biedl, T. Hackl, M. Held, S. Huber, P. Palfrader, B. Vogtenhuber, in:, Graph Drawing and Network Visualization, Springer Nature, 2015, pp. 335–347.