1. https://www.gadgetsnow.com/slideshows/covid-19-how-to-use-coronavirus-tracking-app-aarogya-setu/Go-through-the-information-page-and-tap-the-Register-Now-button-at-the-last-slide/photolist/74977273.cms
2. http://cbse.nic.in/newsite/attach/Lightcandle_03042020.pdf.
3. https://www.mygov.in/aarogya-setu-app/