From 606d9ee1f0f11727471e133cc001c83c0d47e9df Mon Sep 17 00:00:00 2001
From: mattkae <mattkae@protonmail.com>
Date: Sun, 23 Jan 2022 12:02:32 -0500
Subject: Able to hover, click, and drag a joint

---
 2d/softbody/softbody_2.html | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

(limited to '2d/softbody/softbody_2.html')

diff --git a/2d/softbody/softbody_2.html b/2d/softbody/softbody_2.html
index 3439a25..62772f1 100644
--- a/2d/softbody/softbody_2.html
+++ b/2d/softbody/softbody_2.html
@@ -113,7 +113,11 @@
   <footer id='references'>
     <h2>References</h2>
     <ul>
-      <li></li>
+      <li>
+		<a href='http://www.ctaps.yu.edu.jo/physics/Courses/Phys207/Supplements/Phys207_Suppl1_SHO_Springs.pdf'>
+		  Springs in Series and Parallel
+		</a>
+	  </li>
     </ul>
   </footer>
 </article>
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