Informácie od umeleckej organizácie (Overené Operabase)
150 Years Bulgarian Academy of Sciences by Vladigerov, P., Cherkin, Stainov, Stoyanov, Dinicu, G., so 12 okt 2019, Od (2019/2019), Dirigent Nayden Todorov, The National Palace of Culture - Congress Centre Sofia (NDK), Sofia, Bulgaria