diff --git a/Xubuntu-UHD-display.md b/Xubuntu-UHD-display.md
index 616abac..94fcdd7 100644
--- a/Xubuntu-UHD-display.md
+++ b/Xubuntu-UHD-display.md
@@ -95,3 +95,4 @@ dpkg-reconfigure console-setup
 
 select a font face that supports a larger font size, for instance the Terminus font, and select a large font size such as 16x32; you need to reboot for the new font to be set.
 
+https://vincent.bernat.ch/fr/blog/2018-double-ecran-4k-linux
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