diff --git a/user-doc/bibliography.bib b/user-doc/bibliography.bib
index 55b6aea87afb78e74aa716b7bad7f7b20341db1a..328ace1e1c0ed7519ebdad03977642f0b6c07035 100644
--- a/user-doc/bibliography.bib
+++ b/user-doc/bibliography.bib
@@ -2698,6 +2698,7 @@ pages = {3999--4000},
 	Pages = {773--781},
 	Publisher = {Curran Associates, Inc., Red Hook, NY},
 	Title = {Non-strongly-convex smooth stochastic approximation with convergence rate O(1/n)},
+  Url = {http://papers.nips.cc/paper/4900-non-strongly-convex-smooth-stochastic-approximation-with-convergence-rate-o1n.pdf},
 	Year = {2013}
 }