SOMOZA, M. M.; FRIEDRICH, J. The physics of rotational tunneling: hole-burning spectroscopy of methyl groups: Molecular Solids. ФІЗИКА НИЗЬКИХ ТЕМПЕРАТУР, Харків, Україна, v. 32, n. 11, p. 1345–1354, 2006. DOI: 10.1063/1.2389008. Disponível em: https://fnt.ilt.kharkiv.ua/index.php/fnt/article/view/f32-1345e. Acesso em: 3 трав. 2024.