diff --git a/doc/paper/taler.bib b/doc/paper/taler.bib
index cf37f676f..1605511d1 100644
--- a/doc/paper/taler.bib
+++ b/doc/paper/taler.bib
@@ -229,6 +229,14 @@
   url="http://web.cs.ucdavis.edu/~rogaway/papers/exact.pdf"
 }
 
+@article{martens2015practical,
+  title={Practical Divisible E-Cash.},
+  author={M{\"a}rtens, Patrick},
+  journal={IACR Cryptology ePrint Archive},
+  volume={2015},
+  pages={318},
+  year={2015}
+}
 
 
 @article{OneMoreInversion,