Update...

Update 12.temporary_ins/71.waves/20.n2/15.interferences-two-harmonic-synchrone-waves/20.overview/cheatsheet.fr.md

12.temporary_ins/71.waves/20.n2/15.interferences-two-harmonic-synchrone-waves/20.overview/cheatsheet.fr.md

@@ -12,6 +12,10 @@ lessons:
       slug: interferences-diffraction-2
       name: PARALLÈLE-2 : Interférences et diffraction
       order: 1
+    -
+      slug: interferences-real-and-complex-notations-23
+      name: PANORAMA-23 : Interférences
+      order: 1
 ---
 
 *Cours en construction*, **non validé**.