diff --git a/2020/Schaefer_Jan_Frederik.pdf b/2020/Schaefer_Jan_Frederik.pdf
new file mode 100644
index 0000000000000000000000000000000000000000..f5bb6990d21079815ee9d804db22809f075e7082
Binary files /dev/null and b/2020/Schaefer_Jan_Frederik.pdf differ