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JSchoeberl · Apr 15, 2024 · dfabcaa · dfabcaa
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diff --git a/FEM/nonconforming.html b/FEM/nonconforming.html
diff --git a/_sources/FEM/nonconforming.ipynb b/_sources/FEM/nonconforming.ipynb
@@ -23,7 +23,9 @@
     "inexact numerical integration\n",
     "\n",
     "The lemmas by Strang are the extension of Cea's lemma to the \n",
-    "non-conforming setting."
+    "non-conforming setting.\n",
+    "\n",
+    "Ref: *Gil Strang:* [Variational crimes in the finite element method](https://www.sciencedirect.com/science/article/abs/pii/B9780120686506500307?via%3Dihub)"
    ]
   },
   {

diff --git a/searchindex.js b/searchindex.js