diff --git a/Documents/Criticités/Fiche technique ICS.md b/Documents/Criticités/Fiche technique ICS.md
index af9fe8f..ea43263 100644
--- a/Documents/Criticités/Fiche technique ICS.md	
+++ b/Documents/Criticités/Fiche technique ICS.md	
@@ -1463,7 +1463,6 @@ pair:
 
 ### Sources
 - [2] - Semantic Scholar. (2024).["Effect of Gadolinium Doping on the Structure of Ce1-xGdxO2-x/2 Solid Solutions."](<https://www.semanticscholar.org/paper/165c7cc2af162338896ec69381e61f2c9951b2c6>),
-- [4] - PubMed. (2019).["Toxicological Risk Assessments of Iron Oxide Nanocluster- and Gadolinium-Based T1MRI Contrast Agents in Renal Failure Rats."](<https://pubmed.ncbi.nlm.nih.gov/31141658/>),
 - [6] - Semantic Scholar.["A Potential Substitution for Gadolinium in Brachial Plexus Magnetic Resonance Neurography: Deep Learning-Based Virtual Enhancement."](<https://www.semanticscholar.org/paper/9b4f8e02cda1375f98ac18e36a7ad873b3e1b419>),