https://lifeandtrendz.com/57228-2
https://www.frontiermagazine.co.uk/news/go-duty-free-launches-customer-reward-campaign-13-10-2017
https://www.dfnionline.com/latest-news/go-duty-free-chennai-launches-customer-value-programme-chennai-13-10-2017
http://news.chennaipatrika.com/post/2017/10/12/GO-Duty-Free-Chennai-is-now-Free.aspx
