diff --git a/README.md b/README.md
index 22ec72da..4d092656 100644
--- a/README.md
+++ b/README.md
@@ -35,6 +35,5 @@ Byshkin, M., Stivala, A., Mira, A., Krause, R., Robins, G., & Lomi, A. (2016). A
 
 Byshkin, M., Stivala, A., Mira, A., Robins, G., & Lomi, A. (2018). [Fast Maximum Likelihood Estimation via Equilibrium Expectation for Large Network Data](https://www.nature.com/articles/s41598-018-29725-8). *Scientific Reports* 8:11509. https://doi.org/10.1038/s41598-018-29725-8
 
-
-Stivala, A., Robins, G., & Lomi, A. (2020). Exponential random graph model parameter estimation for very large directed networks. *PloS ONE*, 15(1), e0227804. https://arxiv.org/abs/1904.08063
+Stivala, A., Robins, G., & Lomi, A. (2020). [Exponential random graph model parameter estimation for very large directed networks](https://doi.org/10.1371/journal.pone.0227804). *PloS ONE*, 15(1), e0227804. https://arxiv.org/abs/1904.08063