MatheTurnier_23_BFro_088_a.jpg

Links
- https://www.mathematics.uni-bonn.de/de/outreach/pictures/for-students-and-teachers/matheturnier_23_bfro_088_a.jpg/image_view_fullscreen
- https://www.mathematics.uni-bonn.de/de/outreach/pictures/for-students-and-teachers/matheturnier_23_bfro_088_a.jpg/@@download/image/MatheTurnier_23_BFro_088_a.jpg