@article{10_37236_1957,
     author = {M. D. Atkinson and M. M. Murphy and N. Ru\v{s}kuc},
     title = {Pattern avoidance classes and subpermutations},
     journal = {The electronic journal of combinatorics},
     year = {2005},
     volume = {12},
     doi = {10.37236/1957},
     zbl = {1081.05006},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/1957/}
}