The Measurements of Directional Dependence of Weight for Magnets. Global Journal of Science Frontier Research, [S. l.], v. 18, n. A11, p. 1–11, 2018. Disponível em: https://www.journalofscience.org/index.php/GJSFR/article/view/2361. Acesso em: 14 aug. 2026.