From 04d94934e2caa7246cee4a6aec194952a0c826ff Mon Sep 17 00:00:00 2001
From: HarryR <c.rossides@soton.ac.uk>
Date: Thu, 30 Jul 2020 13:01:38 +0100
Subject: [PATCH] Update README.md

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 README.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/README.md b/README.md
index 51ec1d4..3575bfb 100644
--- a/README.md
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@@ -12,4 +12,5 @@ A scroll bar that controls the material density allows the user to interactively
 It also provides functionality for the differential refractive index (the refractive index for the boundary when you have a material inside another material).
 
 [1] http://henke.lbl.gov/optical_constants/getdb2.html
+
 [2] B. L. Henke, E. M. Gullikson, and J. C. Davis, “X-ray interactions: photoabsorption, scattering, transmission and reflection E= 50-30,000 eV, Z= 1-92”, Atomic data and nuclear data tables, vol. 54, 1993.
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