@article {ClJeSt2012,
    author = {Claesson, Anders and Jel\'{\i}nek, V\'{\i}t and Steingr\'{\i}msson, Einar},
     title = {Upper bounds for the {S}tanley-{W}ilf limit of 1324 and other
              layered patterns},
   journal = {J. Combin. Theory Ser. A},
  fjournal = {Journal of Combinatorial Theory. Series A},
    volume = {119},
      year = {2012},
    number = {8},
     pages = {1680--1691},
      issn = {0097-3165},
       doi = {10.1016/j.jcta.2012.05.006},
       url = {https://doi.org/10.1016/j.jcta.2012.05.006},
}