Thom, Andreas Berthold Max Planck Institute for Mathematics in the Sciences, Max Planck Society;
Schneider, J., & Thom, A. B. (2021). A note on the normal subgroup lattice of ultraproducts of finite quasisimple groups. Proceedings of the American Mathematical Society, 149(5), 1929-1942. doi:10.1090/proc/15385.