Fedorchuk, V. and Fedorchuk, V. 2021. On symmetry reduction and some classes of invariant solutions of the (1+3)-dimensional homogeneous Monge-Ampère equation. Proceedings of the International Geometry Center. 14, 3 (Dec. 2021), 206-218. DOI:https://doi.org/10.15673/tmgc.v14i3.2078.