Zarubin AN. Integral representation of a solution of the Cauchy problem for a degenerating hyperbolic equation with retarded argument. Ukr. Mat. Zhurn. [Internet]. 1997 Oct. 25 [cited 2025 Apr. 13];49(10):1332–1336. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/5131