Prof. Reinhard Winkler (1964-2021): An obituary
The Vienna University of Technology, the Faculty of Mathematics and Geoinformation and the Institute for Discrete Mathematics and Geometry mourn the death of Prof. Reinhard Winkler.
Link: https://www.tuwien.at/tu-wien/aktuelles/news/news/prof-reinhard-winkler-1964-2021-ein-nachruf