American Research Center in Sofia. ( Sofia, Bulgaria) [Koha]
Bulgaria. ( Sofia, Bulgaria) [COBISS] +
Bulgarian Academy of Sciences. Централната библиотека на БАН ( Sofia, Bulgaria) [ALEPH 500] +
Instituto Cervantes. ( Sofia, Bulgaria) [AbsysNet]
Sofia University. Университетска библиотека ( Sofia, Bulgaria) [ALEPH 500] +