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 2024 May 3];5:752-74. Available from: https://journals.rta.lv/index.php/SIE/article/view/4873