https://avtoreferats.com/2021/11/29/%d8%aa%d9%81%d8%b3%d9%8a%d8%b1-%d8%ad%d9%84%d9%85-%d8%a7%d9%84%d9%85%d8%a7%d8%a1-%d9%81%d9%8a-%d8%a7%d9%84%d8%a8%d9%8a%d8%aa/