@article{LiLowdonOliveiraetal.2021,
  author    = {Shirley Weishi Li and Peter Lowdon and Orlando Oliveira and Paulo J. Silva},
  title     = {Non-perturbative BRST symmetry and the spectral structure of the ghost propagator},
  journal   = {Physics letters B},
  volume    = {823},
  number    = {136753},
  doi       = {10.1016/j.physletb.2021.136753},
  year      = {2021},
}