M. E. Gnedko and O. P. Khromova, “Conformal Killing equation on a 2-symmetric six-dimensional indecomposable Lorentzian manifold with trivial Weyl tensor”, Журнал Белорусского государственного университета. Математика. Информатика, no. 3, pp. 29–37, Jan. 2026, Accessed: Jul. 18, 2026. [Online]. Available: https://journals.bsu.by/index.php/mathematics/article/view/7281