Marcel Baer and Li Guo have received their PhD certificates.

Links
- https://www.inres.uni-bonn.de/cfg/en/c-f-g/news/marcel-baer-and-li-guo-receive-their-phd-certificates/baer-guo.jpg/image_view_fullscreen
- https://www.inres.uni-bonn.de/cfg/en/c-f-g/news/marcel-baer-and-li-guo-receive-their-phd-certificates/baer-guo.jpg/@@download/image/Baer+Guo.jpg