SPYRA, Janusz. Paradisal are Cieszyn areas or how doctor František Sláma tried Cieszyn gypsies. Studia Etnologiczne i Antropologiczne, [S. l.], v. 11, p. 244–256, 2011. Disponível em: https://trrest.vot.pl/ojsus/index.php/SEIA/article/view/9040. Acesso em: 7 may. 2025.