Ministry of culture of Bulgaria
NAIM – National Institute of Archaeology and Muzeum. Bulgarian academy of Science
NIM – National museum of History
UACG – Universiti of Architecture, Civil Engineering and Geodesy, Sofia
UBA – Union of Bulgarian Architects
AMPL – Archaeological Museum Plovdiv
HMPL – Historical Museum Plovdiv
Ancient Plovdiv Municipal Institut
Cultural centre "Dvoreca" Balchik
UNESCO World Heritage Centre (Centre du Patrimoine Mondial de l'UNESCO)
UNESCO – United Nations Educational, Scientific and Cultural Organisation
ICCROM – International Centre for the Study of the Preservation and Restoration of Cultural Property
ICOM – International Council on Museums
IUCN – World Conservation Union
IFLA – International Federation of Landscape Architects
ICBS – International Comittee of the Blue Shield (Comité International du Bouclier Bleu)
TICCIH – International Committee for the Conservation of the Industrial Heritage
DoCoMoMo – International Committee for the Documentation and Conservation of Monuments and Sites of the Modern Movement
ICA – International Council on Archives