Woman in science
Elizaveta Karamihailova (1897-1968) was the first female nuclear physics in Bulgaria. She established the first practical courses of particle physics and became the first woman to hold a professorial title in the country. Elizaveta graduated as a PhD in Physics and Mathematics in Vienna and was appointed as a docent of Experimental Atomistics with Radioactivity at Sofia University in 1939. She founded the radioactivity laboratory at the Physics Institute of the Bulgarian Science Academy.
Link:
https://upb.phys.uni-sofia.bg/old/Karam.html