Lavrenyuk SP, Pukach PY. Mixed problem for a nonlinear hyperbolic equation in a domain unbounded with respect to space variables. Ukr. Mat. Zhurn. [Internet]. 2007Nov.25 [cited 2024Nov.25];59(11):1523–1531. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/3408