Mrowiński, Eugeniusz. “Feudal Coin of Livonia and Curlandia, in the 16th-18th Centuries : State of Investigations and Perspectives”. Fasciculi Archaeologiae Historicae 3 (January 1, 1989). Accessed July 22, 2024. https://journals.iaepan.pl/fah/article/view/1262.