From d2aa8903860dae6643ac2c4f16eda9576c81a6c9 Mon Sep 17 00:00:00 2001
From: Michael <michael.krause@uni-leipzig.de>
Date: Mon, 15 Jan 2018 19:26:06 +0100
Subject: [PATCH] Add link to the paper.

---
 doc/Koopmans_paper.txt | 1 +
 1 file changed, 1 insertion(+)
 create mode 100644 doc/Koopmans_paper.txt

diff --git a/doc/Koopmans_paper.txt b/doc/Koopmans_paper.txt
new file mode 100644
index 0000000..23ce9d5
--- /dev/null
+++ b/doc/Koopmans_paper.txt
@@ -0,0 +1 @@
+You can find the original paper here: https://users.ece.cmu.edu/~koopman/misc/byte87a.pdf