Ozola S. THE FORMING OF CASTELLUM-TYPE CASTLES AND FOUR-UNIT BUILDING COMPLEXES WITH CHAPELS IN SECULAR POWER CENTRES OF COURLAND AND THE STATE OF THE TEUTONIC ORDER. SIE [Internet]. 2020 May 20 [cited 2026 Mar. 11];5:752-74. Available from: https://archive-journals.rtu.lv/sie/article/view/2593