• World map of recipes / G. Li, S. Nickel, M. Nöllenburg, I. Viola, H. Wu / Poster: Graph Drawing Contest, unknown; 2019-10-19
  • Exploring Semi-Automatic Map Labeling / F. Klute, G. Li, R. Löffler, M. Nöllenburg, M. Schmidt / Talk: ACM SIGSPATIAL international conference on Advances in geographic information systems, Chicago, USA; 2019-11-05 - 2019-11-08; in: "Proceedings of the 27th ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems", (2019), ISBN: 978-1-4503-6909-1; 13 - 22