The Path towards the "Danube Monarchy"? : the Political Legacy of Emperor Sigismund and His "Executors" in the Fifteenth Century - Bar, Přemysl (. Unions and divisions. - London : Routledge, 2023. - xxvi, 365 Seiten. - Illustrationen, Karten. - ISBN 978-1-03-205750-7, 2023)