diff --git a/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/10.mathematical-tools/10.vector-analysis/main/textbook.fr.md b/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/10.mathematical-tools/10.vector-analysis/main/textbook.fr.md
index 1c628c324..3f1977c06 100644
--- a/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/10.mathematical-tools/10.vector-analysis/main/textbook.fr.md
+++ b/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/10.mathematical-tools/10.vector-analysis/main/textbook.fr.md
@@ -223,9 +223,6 @@ https://en.wikipedia.org/wiki/ISO_31-11
 
 ### Vectores, análisis vectorial / Vecteurs, analyse vectorielle / Vectors, vector analysis
 
-(http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=102-03-04)
-
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 * *MATO3-VA-10*