Biniaś-Szkopek M. Who was Silesia for? Conflicts within the Piast Dynasty over the rule in Silesia in the second half of the 12th century. osap [Internet]. 2016 Dec. 15 [cited 2024 Dec. 5];14(4 (2):25-36. Available from: https://czasopisma.uni.opole.pl/index.php/osap/article/view/1309