HEWNER, Katarzyna. Piotr Wlostowic or Piotr Wszeborowic? On the foundation and the founder of the Norbertine monastery in Strzelno. Our Past, [S. l.], v. 94, p. 47–84, 2000. DOI: 10.52204/np.2000.94.47-84. Disponível em: https://ojs.academicon.pl/np/article/view/7807. Acesso em: 20 may. 2024.