@misc{gfp_map_su_3_to_psu_3,
  author = {{Groups for Physics}},
  title = {SU(3) → PSU(3)},
  howpublished = {Groups for Physics reference},
  url = {https://groups.qft.org/atlas/maps/su-3-to-psu-3/},
  version = {2026.11-workbench.4},
  note = {Research workbench IV; review status recorded on canonical page}
}