@article{10_37236_1673,
     author = {Peter A. H\"ast\"o},
     title = {The packing density of other layered permutations},
     journal = {The electronic journal of combinatorics},
     year = {2002},
     volume = {9},
     number = {2},
     doi = {10.37236/1673},
     zbl = {1037.05001},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/1673/}
}