https://en.wikipedia.org/wiki/Fani_Popova-Mutafova
https://bg.wikipedia.org/wiki/%D0%A4%D0%B0%D0%BD%D0%B8_%D0%9F%D0%BE%D0%BF%D0%BE%D0%B2%D0%B0-%D0%9C%D1%83%D1%82%D0%B0%D1%84%D0%BE%D0%B2%D0%B0
https://bg.wikipedia.org/wiki/%D0%A7%D0%B0%D0%B2%D0%B4%D0%B0%D1%80_%D0%9C%D1%83%D1%82%D0%B0%D1%84%D0%BE%D0%B2
