@INPROCEEDINGS{Hoffmann2013,
    author = {Hoffmann, Ruth and Linton, Steve},
    booktitle = {Permutation Patterns},
    keywords = {automaton,permutation,permutation class,permutation pattern,word},
    publisher = {Pure Mathematics And Applications},
    title = {{Regular Languages of Plus- and Minus- (In)Decomposable Permutations}},
    year = {2013}
}