diff --git a/16_security_privacy_ln.asciidoc b/16_security_privacy_ln.asciidoc
index 9fda5ff..1b8fb5b 100644
--- a/16_security_privacy_ln.asciidoc
+++ b/16_security_privacy_ln.asciidoc
@@ -605,15 +605,15 @@ In this chapter, we used many references from ongoing research on Lightning secu
 
 ===== Privacy and probing attacks
 
-* Jordi Herrera-Joancomartí et al.https://eprint.iacr.org/2019/328"[On the Difficulty of Hiding the Balance of Lightning Network Channels"]
-* Nisslmueller et al. https://arxiv.org/abs/2003.00003["Toward Active and Passive Confidentiality Attacks on Cryptocurrency Off-Chain Networks"]
-* Tikhomirov et al. https://arxiv.org/abs/2004.00333["Probing Channel Balances in the Lightning Network"]
-* Kappos et al. https://arxiv.org/abs/2003.12470["An Empirical Analysis of Privacy in the Lightning Network"]
+* Jordi Herrera-Joancomartí et al. https://eprint.iacr.org/2019/328["On the Difficulty of Hiding the Balance of Lightning Network Channels"], _Asia CCS '19: Proceedings of the 2019 ACM Asia Conference on Computer and Communications Security_ (July 2019): 602–612.
+* Utz Nisslmueller et al. "Toward Active and Passive Confidentiality Attacks on Cryptocurrency Off-Chain Networks." arXiv preprint, https://arxiv.org/abs/2003.00003[] (2020).
+* Sergei Tikhomirov et al. "Probing Channel Balances in the Lightning Network." arXiv preprint, https://arxiv.org/abs/2004.00333[] (2020).
+* George Kappos et al. "An Empirical Analysis of Privacy in the Lightning Network." arXiv preprint, https://arxiv.org/abs/2003.12470[] (2021).
 * https://github.com/LN-Zap/zap-desktop/blob/v0.7.2-beta/services/grpc/router.methods.js[Zap source code with the probing function]
 
 ===== Congestion attacks
 
-* Ayelet Mizrahi and Aviv Zohar. "Congestion Attacks in Payment Channel Networks". arXiv preprint, https://arxiv.org/abs/2002.06564 (2020).
+* Ayelet Mizrahi and Aviv Zohar. "Congestion Attacks in Payment Channel Networks." arXiv preprint, https://arxiv.org/abs/2002.06564[] (2020).
 
 ===== Routing considerations