Proceedings of the fourth international Roman and Late Antique Thrace conference : conflicts and catastrophes in Roman and Late antique Thrace, Burgas, 12th-16th October 2020 - Вагалински, Людмил Фердинандов 1958-; Райчева, Милена Димитрова 1985- (National Archaeological Institute with Museum. Bulgarian Academy of Sciences, 2024)