From 9657833b115c8a61509295d2296c6f89e81fd219 Mon Sep 17 00:00:00 2001
From: Prefetch
Date: Fri, 28 May 2021 15:27:37 +0200
Subject: Improve citations

---
 content/know/concept/bell-state/index.pdc | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'content/know/concept/bell-state')

diff --git a/content/know/concept/bell-state/index.pdc b/content/know/concept/bell-state/index.pdc
index 5e147e2..9fe69d1 100644
--- a/content/know/concept/bell-state/index.pdc
+++ b/content/know/concept/bell-state/index.pdc
@@ -91,3 +91,9 @@ then $B$ instantly also collapses into $\ket{0}$, never $\ket{1}$,
 even if it was not measured.
 This was a specific example for $\ket*{\Phi^{+}}$,
 but analogous results can be found for the other Bell states.
+
+
+## References
+1.  J.B. Brask,
+    *Quantum information: lecture notes*,
+    2021, unpublished.
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