diff --git a/Articles_essentiels.bib b/Articles_essentiels.bib
index 0d76a6b..dda645a 100644
--- a/Articles_essentiels.bib
+++ b/Articles_essentiels.bib
@@ -29,6 +29,16 @@
 }
 
 @comment {C}
+
+@article{cattaruzza2018enjeux,
+  title={Les enjeux de la num{\'e}risation du champ de bataille},
+  author={Cattaruzza, Ama{\"e}l and Taillat, St{\'e}phane},
+  journal={Dynamiques internationales},
+  number={13},
+  year={2018},
+  pdf={https://hal.science/hal-01811385/document}
+}
+
 @comment {D}
 
 @article{douzet2020cyberespace,
@@ -106,6 +116,15 @@
 }
 
 @comment {H}
+
+@article{howard2018ira,
+  title={The IRA, social media and political polarization in the United States, 2012-2018},
+  author={Howard, Philip N and Ganesh, Bharath and Liotsiou, Dimitra and Kelly, John and Fran{\c{c}}ois, Camille},
+  year={2018},
+  publisher={Project on Computational Propaganda},
+  url={https://research.rug.nl/en/publications/the-ira-social-media-and-political-polarization-in-the-united-sta}
+}
+
 @comment {I}
 @comment {J}
 @comment {K}