SPAŁEK, Dariusz. Levitation of permanent magnet ball. Bulletin of the Polish Academy of Sciences Technical Sciences, [S. l.], v. 73, n. 5, p. e154719, 2025. DOI: 10.24425/bpasts.2025.154719. Disponível em: https://wydawnictwo.pan.pl/index.php/bpasts/article/view/939. Acesso em: 28 may. 2026.