diff --git a/References.md b/References.md
index 3b57729..69bcc7a 100644
--- a/References.md
+++ b/References.md
@@ -5,4 +5,6 @@
 5. https://en.algorithmica.org/hpc/data-structures/s-tree/
 6. https://en.wikipedia.org/wiki/RocksDB
 7. https://debezium.io/
-8. https://www.melconway.com/Home/Conways_Law.html
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+8. https://www.melconway.com/Home/Conways_Law.html
+9. https://corecursive.com/066-sqlite-with-richard-hipp/
+10.https://www.johndcook.com/blog/2010/11/29/where-to-wait-for-an-elevator/
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