American University Blagoevgrad
Burgas Free University
Bulgarian Academy of Sciences- Institute of Ecology
Bulgarian Academy of Sciences-
Institute of AstronomyTodor Kableshkov University of Transport
Rakovski National Defence College
Kinder garden №123 "Charles Perrault" in Sofia
Kinder garden, quarter 63, Mladost district in Sofia
Sofia Mathematics High School
34 primary school Stoyu Shishkov
19 high school „Elin Pelin“
Sofia Vocational High School of Electronics „John Atanasov“
University of Architecture Civil engineering and Geodesy
University of National and World Economy, Teachers' Reading Room
Technical University, Sofia
Ludwig Maximilian University of Munich
Technical University of Munich
Bundeswehr University Munich