diff --git a/Writerside/topics/Reference.md b/Writerside/topics/Reference.md
index 958db9a8..a7faf211 100644
--- a/Writerside/topics/Reference.md
+++ b/Writerside/topics/Reference.md
@@ -12,4 +12,6 @@
 * [semanticscholar.org/paper/9766705c7b3622fe33381d01c7b5c5591b76556f](https://www.semanticscholar.org/paper/9766705c7b3622fe33381d01c7b5c5591b76556f)
 * [semanticscholar.org/paper/460862741e1a69c5a9a1002d25e5b2d55c87b7e4](https://www.semanticscholar.org/paper/460862741e1a69c5a9a1002d25e5b2d55c87b7e4)
 * [semanticscholar.org/paper/0cdab4b394ada6d84eb4696f2485aff888b950b1](https://www.semanticscholar.org/paper/0cdab4b394ada6d84eb4696f2485aff888b950b1)
-* [semanticscholar.org/paper/5e786e11846f02a361aacc8e568d248f7c9db071](https://www.semanticscholar.org/paper/5e786e11846f02a361aacc8e568d248f7c9db071)
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+* [semanticscholar.org/paper/5e786e11846f02a361aacc8e568d248f7c9db071](https://www.semanticscholar.org/paper/5e786e11846f02a361aacc8e568d248f7c9db071)
+* [ijiet.com/wp-content/uploads/2019/08/18.pdf](https://ijiet.com/wp-content/uploads/2019/08/18.pdf)
+* [proceedings.neurips.cc/paper_files/paper/1998/file/a2cc63e065705fe938a4dda49092966f-Paper.pdf](https://proceedings.neurips.cc/paper_files/paper/1998/file/a2cc63e065705fe938a4dda49092966f-Paper.pdf)
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