From 6f560e87fa5cd10852e073adbedfc3d46e5da8bb Mon Sep 17 00:00:00 2001
From: Prefetch
Date: Sat, 13 Mar 2021 21:50:05 +0100
Subject: Expand knowledge base

---
 content/know/concept/quantum-entanglement/index.pdc | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'content/know/concept/quantum-entanglement')

diff --git a/content/know/concept/quantum-entanglement/index.pdc b/content/know/concept/quantum-entanglement/index.pdc
index f8d0b76..4fd1275 100644
--- a/content/know/concept/quantum-entanglement/index.pdc
+++ b/content/know/concept/quantum-entanglement/index.pdc
@@ -150,3 +150,8 @@ $$\begin{aligned}
     = \Tr_A\big(\hat{\rho}_A \hat{O}_A\big)
 \end{aligned}$$
 
+
+## References
+1.  J.B. Brask,
+    *Quantum information: lecture notes*,
+    2021, unpublished.
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