@article{OPUS4-22613,
  title     = {Search for pair production of up-type vector-like quarks and for four-top-quark events in final states with multiple \(b\)-jets with the ATLAS detector},
  journal   = {Journal of High Energy Physics},
  volume    = {89},
  number    = {7},
  doi       = {10.1007/JHEP07(2018)089},
  year      = {2018},
}