Jeż J. From an Enemy to a Loyal Ally, or the Relationship between Siemowit IV, Duke of Masovia, with Jadwiga of Capetian House of Anjou and Władysław Jagiełło. In: Budzyński P, Dawczyk M, Gryglewski K, Ziółkowski M, editors. Vade Nobiscum, tom XX/2019: Studia z historii politycznej i wojskowej [Internet]. Poland: Lodz University Press; 2019 [cited 2026 Jan. 26]. pp. 61-7. (, editor. Vade Nobiscum). Available from: https://www.press.uni.lodz.pl/index.php/wul/catalog/book/1483/chapter/4584