1.
Yuryk II. Nonlinear d’alembert equation in the pseudo-euclidean space $R_{2,n}$ and its solutions. Ukr. Mat. Zhurn. [Internet]. 2000Jun.25 [cited 2024May10];52(6):820-7. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/4476