diff --git a/renaux-digitaltwins.md b/renaux-digitaltwins.md
index 3329ac2d236c2fdf3a7ac7c189cdeb9083f372c8..69387586d5252c20b156c0c58df4821e19509a64 100644
--- a/renaux-digitaltwins.md
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@@ -64,3 +64,6 @@ Une première étape pourrait être de collecter et traiter les données discrè
 ### Bibliographie
 
 [1] Tao et al. Digital twin-driven product design, manufacturing and service with big data, International Journal of Advanced Manufacturing Technology, March 2017
+[2] Eric J. Tuegel, Anthony R. Ingraffea, Thomas G. Eason, and S. Michael Spottswood, Reengineering Aircraft Structural Life Prediction Using a Digital Twin, International Journal of Aerospace Engineering Volume 2011
+[3] E. H. Glaessgen, D.S. Stargel, The Digital Twin Paradigm for Future NASA and U.S. Air Force Vehicles, 53rd Structures, Structural Dynamics, and Materials Conference: Special Session on the Digital Twin
+