diff --git a/Scientific-papers.md b/Scientific-papers.md
index 07e1221..12ea216 100644
--- a/Scientific-papers.md
+++ b/Scientific-papers.md
@@ -1,11 +1,8 @@
-* "What Ad Blockers Are (and Are Not) Doing" https://web.cs.wpi.edu/~cew/papers/hotweb16.pdf
-* "Block Me If You Can: A Large-Scale Study of Tracker-Blocking Tools" https://www.sba-research.org/wp-content/uploads/publications/block_me_if_you_can.pdf
+* "A comparison of web privacy protection techniques" https://arxiv.org/pdf/1712.06850.pdf
 * "Ad-blocking: A Study on Performance, Privacy and Counter-measures" https://arxiv.org/pdf/1705.03193.pdf
 * "Benchmark and Comparison of Tracker-blockers: Should You Trust Them?" https://tma.ifip.org/wordpress/wp-content/uploads/2017/06/tma2017_paper30.pdf
-* "What a Tangled Web We Weave: Understanding the Interconnectedness of the Third Party Cookie Ecosystem" https://nms.kcl.ac.uk/netsys/datasets/tracking-the-trackers-papers/tanged_web.pdf
-* "Understanding the Performance Costs and Benefits of Privacy-focused Browser Extensions" https://kevin.borgolte.me/files/pdf/www2020-privacy-extensions.pdf
+* "Block Me If You Can: A Large-Scale Study of Tracker-Blocking Tools" https://www.sba-research.org/wp-content/uploads/publications/block_me_if_you_can.pdf
 * "Internet Privacy Implications" https://digital.wpi.edu/downloads/h989r614k
-* "A comparison of web privacy protection techniques" https://arxiv.org/pdf/1712.06850.pdf
-* "Benchmark and comparison of tracker-blockers: Should you trust them?" https://core.ac.uk/download/pdf/234917747.pdf
-* "Block Me If You Can: A Large-Scale Study of Tracker-Blocking Tools" https://eprints.cs.univie.ac.at/6446/1/block_me_if_you_can.pdf
-
+* "Understanding the Performance Costs and Benefits of Privacy-focused Browser Extensions" https://kevin.borgolte.me/files/pdf/www2020-privacy-extensions.pdf
+* "What a Tangled Web We Weave: Understanding the Interconnectedness of the Third Party Cookie Ecosystem" https://nms.kcl.ac.uk/netsys/datasets/tracking-the-trackers-papers/tanged_web.pdf
+* "What Ad Blockers Are (and Are Not) Doing" https://web.cs.wpi.edu/~cew/papers/hotweb16.pdf
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