BORUTA, Jonas. Z. Ivinskis: the first objective researcher of St. Casimir’s life. Lietuvos istorijos studijos, [S. l.], v. 4, p. 199–203, 1997. DOI: 10.15388/LIS.1997.37442. Disponível em: https://test.zurnalai.vu.lt/lietuvos-istorijos-studijos/article/view/37442. Acesso em: 26 oct. 2025.