From 733e49b9ab858a7f963c23ec3a71f65b9573a424 Mon Sep 17 00:00:00 2001
From: Vadim Tkachenko <vt@homeclimatecontrol.com>
Date: Wed, 19 Jun 2024 22:15:14 -0700
Subject: [PATCH] Documentation update (#322)

---
 .../main/java/net/sf/dz3r/controller/HalfLifeController.java   | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/modules/hcc-model/src/main/java/net/sf/dz3r/controller/HalfLifeController.java b/modules/hcc-model/src/main/java/net/sf/dz3r/controller/HalfLifeController.java
index 6826ae3a..68eac712 100644
--- a/modules/hcc-model/src/main/java/net/sf/dz3r/controller/HalfLifeController.java
+++ b/modules/hcc-model/src/main/java/net/sf/dz3r/controller/HalfLifeController.java
@@ -9,7 +9,8 @@
 /**
  * Emits signal decaying according to radioactive decay algorithm on input signal change.
  *
- * Reference: <a href="https://www.omnicalculator.com/chemistry/half-life#half-life-formula">half life formulas</a>.
+ * References: <a href="https://www.omnicalculator.com/chemistry/half-life#half-life-formula">half life formulas</a>,
+ * <a href="https://www.emathhelp.net/en/calculators/differential-equations/half-life-calculator/">interactive calculator</a>.
  *
  * @author Copyright &copy; <a href="mailto:vt@homeclimatecontrol.com">Vadim Tkachenko</a> 2001-2024
  */