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/dispersive-broadening/index.pdc | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'content/know/concept/dispersive-broadening')

diff --git a/content/know/concept/dispersive-broadening/index.pdc b/content/know/concept/dispersive-broadening/index.pdc
index f053eb6..cae856d 100644
--- a/content/know/concept/dispersive-broadening/index.pdc
+++ b/content/know/concept/dispersive-broadening/index.pdc
@@ -93,3 +93,10 @@ Of great importance is the sign of $\beta_2$:
 in the **anomalous dispersion regime** ($\beta_2 < 0$),
 lower frequencies travel more slowly than higher ones,
 and vice versa in the **normal dispersion regime** ($\beta_2 > 0$).
+
+
+
+## References
+1.  O. Bang,
+    *Numerical methods in photonics: lecture notes*, 2019,
+    unpublished.
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