Academie Bulgare des Sciens Institut D'Etudes Balkaniques,
23
Türk Tarih Kurumu,
6
Ministère de la Culture et des Sciences,
3
Academic Bulgare des Sciences,
2
Bolgarskaya Akademiya Nauka,
2
Editions de l'Académie bulgare des sciences,
2
Izdanie na Bulgarskata akademia na naukite,
2
[yayl.y.],
2
American University,
1
Bulgarian Academy of Sciences,
1
11 Yayıncı daha
