diff --git a/HowtoGPG.page b/HowtoGPG.page
index 2723486..fbab66b 100644
--- a/HowtoGPG.page
+++ b/HowtoGPG.page
@@ -28,7 +28,7 @@ My public key is available via: <https://openpgpkey.benpro.fr/.well-known/openpg
 
 ### From WKD
 
-WKD mean Web Key Directory.
+WKD mean Web Key Directory. Interesting website: <https://metacode.biz/openpgp/web-key-directory>
 
 ```
 gpg --locate-key user@example.com