Jan Wasilkowski, Zarys prawa rzeczowego [An Outline of the Law of Things], Warszawa 1963, PWN. Contemporary Central & East European Law, [S. l.], n. 4, p. 45–47, 1965. Disponível em: https://czasopisma.inp.pan.pl/index.php/cceel/article/view/1703. Acesso em: 6 oct. 2025.