diff --git a/_bibliography/papers.bib b/_bibliography/papers.bib
index eb9851e..a31c66d 100644
--- a/_bibliography/papers.bib
+++ b/_bibliography/papers.bib
@@ -34,7 +34,9 @@
   month={May},
   publisher=aps,
   doi={10.1103/PhysRev.47.777},
-  url={http://link.aps.org/doi/10.1103/PhysRev.47.777}
+  url={http://link.aps.org/doi/10.1103/PhysRev.47.777},
+  html={https://journals.aps.org/pr/abstract/10.1103/PhysRev.47.777},
+  pdf={example_pdf.pdf}
 }
 
 @article{einstein1905molekularkinetischen,
diff --git a/assets/pdf/example_pdf.pdf b/assets/pdf/example_pdf.pdf
new file mode 100644
index 0000000..b1f80db
Binary files /dev/null and b/assets/pdf/example_pdf.pdf differ