From 8d459d62b4deed1212f613cad1967b36ca385d5a Mon Sep 17 00:00:00 2001
From: JonZhao <1044264932@qq.com>
Date: Wed, 29 May 2019 11:21:19 +0800
Subject: 1. add reference 2. fix some error in macs calculate next index 3.
 add comment

---
 README.md | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'README.md')

diff --git a/README.md b/README.md
index 7d8e164..16d2a4a 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,5 @@
 # VRPTW-ACO-python
 A **python** implementation of a **ant colony optimization** based solution to **Vehicle Routing Problem with Time Windows**.
+
+## Reference
+1. `Gambardella L M, Taillard É, Agazzi G. Macs-vrptw: A multiple colony system for vehicle routing problems with time windows[C]//New ideas in optimization. 1999.`
\ No newline at end of file
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