Leibniz i teoria faktów stosunkowych: [Leibniz and theory or relative facts]. Studia Prawnicze / The Legal Studies, [S. l.], n. 3-4 (85-86), p. 39–50, 1985. DOI: 10.37232/sp.1985.3-4.4. Disponível em: https://czasopisma.inp.pan.pl/index.php/sp/article/view/3825. Acesso em: 16 aug. 2025.