@article{ClUl2012 author = {Claesson, Anders and Ăšlfarsson, Henning}, title = {Sorting and preimages of pattern classes}, journal = {{Discret Math. Theor. Comput. Sci.}}, fjournal = {{Discrete Mathematics \& Theoretical Computer Science}}, volume = {{DMTCS Proceedings vol. AR, 24th International Conference on Formal Power Series and Algebraic Combinatorics (FPSAC 2012)}}, year = {2012}, url = {https://dmtcs.episciences.org/3066}, }