From 5879abdf037537281a76fe42de295cb27a5e6c0b Mon Sep 17 00:00:00 2001
From: Yen-Chen Lu <alicia850@gmail.com>
Date: Wed, 29 Mar 2023 22:56:41 +0800
Subject: [PATCH] Adds a seminal reference

Somehow overlooked!
---
 journal.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/journal.md b/journal.md
index 30beea7..e917517 100644
--- a/journal.md
+++ b/journal.md
@@ -43,6 +43,7 @@ Reference 2 (1995).
 Reference 3 (1996).
 Reference 4 (2020).
 Reference 5 (1979).
+Reference 9 (1998).
 More missing references (2020)
 
 ## Appendix