diff --git a/docs/links.md b/docs/links.md
index b3b9613..06b175e 100644
--- a/docs/links.md
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@@ -22,4 +22,6 @@ Integration
 - http://arxiv.org/pdf/1411.1341.pdf
 
 Hierarchial shape functions
-- https://www.math.vt.edu/people/adjerids/research/papers/basis.pdf
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+- https://www.math.vt.edu/people/adjerids/research/papers/basis.pdf
+
+- edited by Ari
\ No newline at end of file