@article{DimitrovaFernandesKoppitz2012,
  author    = {Ilinka Dimitrova and Vitor H. Fernandes and J{\"o}rg Koppitz},
  title     = {The maximal subsemigroups of semigroups of transformations preserving or reversing the orientation on a finite chain},
  journal   = {Publicationes mathematicae},
  volume    = {81},
  number    = {1-2},
  pages     = {11 -- 29},
  doi       = {10.5486/PMD.2012.4897},
  year      = {2012},
}