GĂ„UMANN, A.; TROXLER, J. Zonenschmelzen. CHIMIA, [S. l.], v. 23, n. 2, p. 64, 1969. DOI: 10.2533/chimia.1969.64. DisponĂ­vel em: https://www.chimia.ch/chimia/article/view/1969_64. Acesso em: 6 apr. 2025.