آیا ایندکس میشه؟

https://wp.nyu.edu/iranpaper/2019/04/07/10-%D9%85%D9%88%D8%B3%D8%B3%D9%87-%D8%A8%D8%B1%D8%AA%D8%B1-%DA%86%D8%A7%D9%BE-%DA%A9%D8%AA%D8%A7%D8%A8/

http://blogs.ubc.ca/worldscience/2019/04/10/%d9%87%d8%b2%db%8c%d9%86%d9%87-%da%86%d8%a7%d9%be-%da%a9%d8%aa%d8%a7%d8%a8/