(1)
Pahirya, M. M. Continued-Fractions Representations of the Functions $\mathrm{s}\mathrm{h} Z, \mathrm{c}\mathrm{h} Z, \mathrm{s}\mathrm{i}\mathrm{n} Z, \mathrm{c}\mathrm{o}\mathrm{s} Z$.
Ukr. Mat. Zhurn.
2018
,
70
(5), 682-698.