@article{JIS_2003__6_4_a5,
     author = {Albert, M.H. and Atkinson, M.D. and Klazar, M.},
     title = {The enumeration of simple permutations},
     journal = {Journal of integer sequences},
     publisher = {mathdoc},
     volume = {6},
     number = {4},
     year = {2003},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JIS_2003__6_4_a5/}
}