Causal structure of singularity in non-spherical gravitational collapseDipanjan Dey, Pankaj S. Joshi, Karim Mosani and Vitalii VertogradovEur. Phys. J. C, 82 5 (2022) 431DOI: https://doi.org/10.1140/epjc/s10052-022-10401-1