@article {ClJeJeKi2011,
    author = {Claesson, Anders and Jel\'{\i}nek, V\'{\i}t and Jel\'{\i}nkov\'{a}, Eva and
              Kitaev, Sergey},
     title = {Pattern avoidance in partial permutations},
   journal = {Electron. J. Combin.},
  fjournal = {Electronic Journal of Combinatorics},
    volume = {18},
      year = {2011},
    number = {1},
     pages = {Paper 25, 41},
       doi = {10.37236/512},
       url = {https://doi.org/10.37236/512},
}