Veliko Tarnovo Municipality, Bulgaria

Bulgarian Academy of Sciences

Institute of Mathematics and Informatics

Institute for Ethnology and Folklore Studies with Ethnographic Museum

National Archaeological Institute with Museum

Institute of Robotics "Saint Apostle and Gospeller Matthew"

Institute of Optical Materials and Technologies - "Acad. Yordan Malinowski"

Institute for History Studies

Institute of Microbiology

Institute of Astronomy with National Astronomical Observatory

Scientific Archive

Regional Academic Center, Veliko Tarnovo, Bulgaria

"St. Cyril and St. Methodius" University of Veliko Tarnovo, Bulgaria

Faculty of Mathematics and Informatics

Faculty of Orthodox Theology

Faculty of Fine Arts

University of Economics, Varna, Bulgaria

Center of Innovation and Development

"Vasil Levski" National Military University, Bulgaria

Technical University of Gabrovo, Bulgaria

National Academy of Arts, Sofia, Bulgaria

New Bulgarian University, Bulgaria

Higher School of Agribusiness and Regional Development, Veliko Tarnovo Branch, Bulgaria

University of Neuchatel, Switzerland

"D.I. Mendeleyev" Scientific and Research Institute for Metrology, Russia

Saint-Petersburg State University of Culture, Russia

Belarusian State Pedagogical University named after Maxim Tank, Belarus

Public Library "P. R. Slaveykov" in Veliko Tarnovo, Bulgaria

Regional Museum of History in Veliko Tarnovo, Bulgaria

Architectural-Ethnographic Complex "Etar", Gabrovo, Bulgaria

Regional Ethnographic Museum, Plovdiv, Bulgaria

Community Center "Nadejda 1869", Veliko Tarnovo, Bulgaria

Historical Museum, Gorna Oryahovitsa, Bulgaria

Historical Museum, Polski Trambesh, Bulgaria

Museum of Old Photography "Old Varna", Varna, Bulgaria

Museum of History "Iskra", Kazanlak, Bulgaria

Museum of Photography and Contemporary Visual Arts, Kazanlak, Bulgaria

National Park Museum "Shipka-Buzludzha", Bulgaria

Union of Scientists in Bulgaria, Veliko Tarnovo branch, Bulgaria

European Association of Folklore Festivals - EAFF

Federation of the Scientific - Engineering Unions in Bulgaria, Veliko Tarnovo, Bulgaria

Association for the Development of the Information Society, Bulgaria

Inner Wheel Club Varna, Bulgaria