Fedorchuk, V. M., & Fedorchuk, V. I. (2022). On reduction of the (1+3)-dimensional inhomogeneous Monge-Ampère equation to the first-order partial differential equations. Ukrains’kyi Matematychnyi Zhurnal, 74(3), 418-426. https://doi.org/10.37863/umzh.v74i3.6996