WILLIAMS, Alan F. The Helicates: Structural Principles and Supramolecular Properties. CHIMIA, [S. l.], v. 54, n. 10, p. 585, 2000. DOI: 10.2533/chimia.2000.585. Disponível em: https://www.chimia.ch/chimia/article/view/2000_585. Acesso em: 28 mar. 2024.