Nadejda Georgieva
Some short biographical data about Nadejda Georgieva can be found in the obituary [1] and on p. 92 of the paper [2] (a photo of her is also given on that page of the paper).
References
- Obituary by the Department of Mathematical Logic, Sofia, 1995 (in Bulgarian).
- Тонков, Т. Катедра "Математика" при Минно-геоложкия университет "Св. Иван Рилски". Математически форум, т. V, бр. 3 (май-юни 2003 г.), 85-96.