DAGHERO, D.; TORTELLO, M.; PECCHIO, P.; STEPANOV, V.; GONNELLI, R. Point-contact Andreev-reflection spectroscopy in anisotropic superconductors: the importance of directionality (Review Article). ФІЗИКА НИЗЬКИХ ТЕМПЕРАТУР, Харків, Україна, v. 39, n. 3, p. 261–285, 2013. DOI: 10.1063/1.4794994. Disponível em: http://80.92.230.95/index.php/fnt/article/view/f39-0261e. Acesso em: 11 лис. 2025.