Коновенко, Н. and Курбатова, И. 2019. Special classes of pseudo-Riemannian spaces with f-structure that admit 2F-planar mappings. Proceedings of the International Geometry Center. 11, 4 (Apr. 2019), 18-34. DOI:https://doi.org/10.15673/tmgc.v11i4.1304.