@Article{373732,
     author = "Vassil Gjuzelev",
     title = "La quatrième croisade et ses conséquences pour la Bulgarie médiévale: le tzar Kaloyan, les Latins et les Grecs (1204–1207)",
     year =  2013,
     volume =  3,
     number =  ,
     journal =  Studia Ceranea : journal of the Waldemar Ceran Research Centre for the History and Culture of the Mediterranean Area and South-East Europe,
     pages =  s. 29-37,
    }