diff --git a/content/notes/think-writing.md b/content/notes/think-writing.md
index a2bca9fb1..cc9a0a347 100644
--- a/content/notes/think-writing.md
+++ b/content/notes/think-writing.md
@@ -192,3 +192,4 @@ Many enthusiasts simply promote the blockchain as a more efficient, decentralize
 
 # 23/11
 
+[https://doi.org/10.1016/j.eneco.2022.106375](https://doi.org/10.1016/j.eneco.2022.106375 "Persistent link using digital object identifier")
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