@article {ClHa2014,
    author = {Claesson, Anders and Hannah, Stuart A.},
     title = {Decomposing labeled interval orders as pairs of permutations},
   journal = {Electron. J. Combin.},
  fjournal = {Electronic Journal of Combinatorics},
    volume = {21},
      year = {2014},
    number = {4},
     pages = {Paper 4.16, 20},
       doi = {10.37236/4360},
       url = {https://doi.org/10.37236/4360},
}