Ozola, Silvija. 2020. “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”. SOCIETY. INTEGRATION. EDUCATION. Proceedings of the International Scientific Conference 5 (May): 752-74. https://doi.org/10.17770/sie2020vol5.4873.