PAHIRYA, M. M. Continued-fractions representations of the functions $\mathrm{s}\mathrm{h} z, \mathrm{c}\mathrm{h} z, \mathrm{s}\mathrm{i}\mathrm{n} z, \mathrm{c}\mathrm{o}\mathrm{s} z$. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 70, n. 5, p. 682–698, 2018. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/1587. Acesso em: 7 apr. 2025.