Vasilyanskaya, V. S., and V. V. Volchkov. 2016. “Analogs of the Spherical Transform on the Hyperbolic Plane”.
Ukrains’kyi Matematychnyi Zhurnal
68 (4): 469-84.
https://umj.imath.kiev.ua/index.php/umj/article/view/1853
.