STRZHEMECHNY, M.; HEMLEY, R. Ortho–para conversion in the solid hydrogens at high pressures: High-Pressure Studies. ФІЗИКА НИЗЬКИХ ТЕМПЕРАТУР, Харків, Україна, v. 29, n. 9-10, p. 941–946, 2003. DOI: 10.1063/1.1614172. Disponível em: https://fnt.ilt.kharkov.ua/index.php/fnt/article/view/f29-0941e. Acesso em: 3 трав. 2024.