و آر ایل:https://www.washingtonpost.com/rf/image_1484w/2010-2019/WashingtonPost/2017/03/07/Foreign/Images/0307_IndiaZero_SS.jpg?t=20170517
و آر ایل:https://www.washingtonpost.com/world/asia_pacific/indians-are-convinced-they-discovered-the-zero-can-they-prove-it/2017/03/10/de0821f4-19d2-4600-9403-2975c6a8b057_story.html
